Virgo Doubles, part 3 and TV Delos 17.3mm first light

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Virgo Doubles, part 3 and TV Delos 17.3mm first light

#1

Post by Bigzmey »

04/28/2024

Location: home, Bortle 7.
Equipment: SW 182mm Mak on iOptron AZMP mount.

EPs:
TV Plossl 32mm, 50 deg (84x, 2.2mm exit pupil, 0.59 deg TFV)
TV Delite 18.2mm, 62 deg (148x, 1.2mm exit pupil, 0.42 deg TFV)
TV Delos 17.3mm, 72 deg (156x, 1.2mm exit pupil, 0.46 deg TFV)
TV Delite 15mm, 62 deg (180x, 1.0mm exit pupil, 0.34 deg/20’ TFV)
TV Delite 11mm, 62 deg (245x, 0.7mm exit pupil, 15’ TFV)
TV Delite 9mm, 62 deg (300x, 0.6 exit pupil, 13’ TFV)
TV Delite 7mm, 62 deg (386x, 0.5 exit pupil, 9.6’ TFV)

Sunday was a good day. In the morning, I had a nice solar session with my HA/WL setup. Then, I left the AZMP mount under umbrella until the evening and had lovely asteroids/doubles session with my trusty SW 182mm Mak. I wish all Sundays were like that! :D

I have started with doubles at 20:30 with onset of nautical darkness. Then, with onset of astro darkness switched to asteroids. However, some of my target asteroids were behind trees or still too low. So, over the course of the evening I was switching back and forth between doubles and asteroids. But, to keep the report easier to follow I will list all asteroids and all doubles in two sections.

ASTEROIDS

As my list of observed asteroids grows it becomes tougher to log new ones. On one hand, I have to pursue fainter asteroids. On the other, my home sky getting worse year to year, and it is harder to observe faint targets. This session were more misses than hits. Still, I managed to catch four.

For the last few years TV Panoptic 27mm was my main EP for hunting asteroids with the 182mm Mak. This year I am having difficulties resolving astreroids and field stars in 12.5-13.0 mag range with it. To address that I was looking for another wide field in shorter focal length and decided to try TV Delos 17.3mm. Tonight I have used it for the first time and it did not disappoint. Very comfortable EP with sharp views. Feels similar to my favorite Pentax XWs and fits nicely right in between Pentax 20mm and 14mm XWs. So, I will take the Delos on my desert galaxy hunting sessions as well.

This is my asteroid catch of the evening, all with Delos 17.3mm (156x).

(165) Loreley – mag 12.9 asteroid in Cancer.
(214) Aschera – mag 12.9 asteroid in Libra. With mean diameter of ~23 km, this is one of the smallest asteroids I have observed.
(470) Kilia – mag 13.0 asteroid in Virgo. Another small asteroid, ~27km in diameter.
(704) Interamnia – mag 13 asteroid in Orion. Interamnia is on the opposite side of the scale from Aschera and Kilia. With mean diameter of ~330km, it is the 5th largest asteroid and accounts for at least 1% of the total mass of the asteroid belt.

VIRGO DOUBLES

This is my third session in Virgo this year, and this fine constellation keeps delivering.

HJ 2637 (8.9, 9.1, 56.4”) – yellow pair (84x).
STF 1719 (7.6, 8.2, 7.1’) – golden pair (84x).
S 647 (7.9, 10.4, 42.3”) – yellow, silver (84x).
STF 1721 (10.2, 10.3, 6.4”) – yellow pair (84x).
STF 1731 (7.7, 10.1, 9.6”) – yellow, silver, nice contrast (84x).

BU 221 (8.3, 9.5, 1.7”) – yellow, silver, split at the moments of better seeing (300x, 386x).
SHJ 161 (6.8, 7.2, 5.4”) – pretty pair of bright white stars (84x).
RST 3827 AB (8.9, 9.2, 1.7”) – yellow pair, split by hair at 180x.
BU 342 (8.7, 9.0, 4.1”) - yellow pair (84x).
BU 222 (8.3, 9.2, 1.8”) – white, orange, clean tight split at 245x.

STF 1734 (6.8, 7.3, 1.1”) – white pair, split by hair at 245x, clean tight split at 386x.
STF 1735 (9.9, 10.0, 4.1”) – white pair (148x).
H 4 119 (7.8, 10.8, 19.5”) – white, gun metal (148x).
STF 1738 (8.6, 8.7, 4”) – attractive yellow pair (84x).
STF 1740 (7.1, 7.4, 26.1”) – pale yellow pair (84x).

STF 1741 (8.4, 9.8, 24.8”) – white, silver (84x).
STF 1742 (7.8, 8.2, 0.9”) – white pair, split by hair at 386x.
BU 460 (7.9, 9.9, 2”) – white, blue (245x).
STF 1743 (8.8, 9.7, 6.1”) – white, beige (84x).
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Delos, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#2

Post by John Baars »

Great observations!
Quite some hairsplitting difficult ones of 2" separation or less. I ques BU221 was the most difficult one? (magnitude Difference 1.2 and separation of only 1.7") It all depends on seeing at those values, I know from experience.
And 13th magnitude asteroids, with Interamnia as the most high-profile one.
Thanks for your excellent report!
Surely worth a VROD!
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#3

Post by Bigzmey »

Thanks John!

Yes, BU221 was the most difficult of the evening. Luckily, the seeing was above the average and I was able to get confident sighting of the secondary.

Unfortunately, at our inland location nights of good seeing are far in between. Logging anything below 2" requires some luck. Having a telescope of nearly 3 meters focal length certainly helps. It is amazing how technology can fold it into a quite compact and manageable Mak package.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Delos, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#4

Post by messier 111 »

very nice evening that you had and that you brought back to life for us.
I'm happy to see that you like the Delos 17.3, I also often use it to search for an object.
thx Andrey .
I LOVE REFRACTORS , :Astronomer1: :sprefac:

REFRACTOR , TS-Optics Doublet SD-APO 125 mm f/7.8 . Lunt 80mm MT Ha Doublet Refractor .

EYEPIECES, Delos , Delite and 26mm Nagler t5 , 2 zoom Svbony 7-21 , Orion Premium Linear BinoViewer .

FILTER , Nebustar 2 tele vue . Apm solar wedge . contrast booster 2 inches .

Mounts , cg-4 motorized , eq6 pro belt drive .

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Jean-Yves :flags-canada:
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#5

Post by Bigzmey »

Thanks Jean-Yves! I will play more with Delos and if I like what I see I may get 12mm as well.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Delos, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#6

Post by helicon »

Superb report Andrey and your skills certainly shine through with both classes of objects, gathering four faint asteroids is a fine accomplishment and as John says, you are indeed splitting hairs with the doubles...congratulations on winning the VROD for today (5-2-2024)!
-Michael
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#7

Post by Bigzmey »

Thanks Michael!
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Delos, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

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Post by Unitron48 »

Great session and reporting, Andrey! Coincidently I was taking in doubles in Virgo last night with the SVX127D! Lots of great targets there!!

Congrats on your VROD!

Dave
Unitron (60mm, 102mm), Brandon 94
Stellarvue SVX127D
http://www.unitronhistory.com

"Look deep into nature, and then you will understand everything better." Albert Einstein
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

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Post by John Baars »

Congratulations on the VROD!
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#10

Post by Bigzmey »

Unitron48 wrote: Fri May 03, 2024 11:13 am Great session and reporting, Andrey! Coincidently I was taking in doubles in Virgo last night with the SVX127D! Lots of great targets there!!

Congrats on your VROD!

Dave
Thanks Dave! Glad that you had an opportunity to split some.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Delos, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#11

Post by Unitron48 »

Bigzmey wrote: Fri May 03, 2024 4:56 pm
Unitron48 wrote: Fri May 03, 2024 11:13 am Great session and reporting, Andrey! Coincidently I was taking in doubles in Virgo last night with the SVX127D! Lots of great targets there!!

Congrats on your VROD!

Dave
Thanks Dave! Glad that you had an opportunity to split some.
I cleanly split STF 1734 using a TV Nagler Type 6, 3.5 mm at 290x. You have convinced me to try a Delos to complement my 22 mm Panoptic. Can't decide between 17.3 or 14 mm.

Dave
Unitron (60mm, 102mm), Brandon 94
Stellarvue SVX127D
http://www.unitronhistory.com

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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#12

Post by Bigzmey »

Unitron48 wrote: Sat May 04, 2024 9:48 pm
Bigzmey wrote: Fri May 03, 2024 4:56 pm
Unitron48 wrote: Fri May 03, 2024 11:13 am Great session and reporting, Andrey! Coincidently I was taking in doubles in Virgo last night with the SVX127D! Lots of great targets there!!

Congrats on your VROD!

Dave
Thanks Dave! Glad that you had an opportunity to split some.
I cleanly split STF 1734 using a TV Nagler Type 6, 3.5 mm at 290x. You have convinced me to try a Delos to complement my 22 mm Panoptic. Can't decide between 17.3 or 14 mm.

Dave
Good job on STF 1734, Dave! What scope did you use?

How is your typical seeing?

Delos have a good following, I am sure you will like either. The choice depends on your current EPs lineup. What is your next EP stepping from 22mm Panoptic?
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Delos, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#13

Post by Unitron48 »

Bigzmey wrote: Sat May 04, 2024 10:47 pm
Good job on STF 1734, Dave! What scope did you use?

How is your typical seeing?

Delos have a good following, I am sure you will like either. The choice depends on your current EPs lineup. What is your next EP stepping from 22mm Panoptic?

Thanks, Andrey. I was using my Stellarvue SVX127D, 127mm, f/8. My typical seeing at my home location is 3 or 4/5. I have a large gap in TV's (22mm Panoptic, then 10mm Radian) so either would work. I may get both!

I attempted to split STF 1819 (7.7 and 7.9) at .9 arcsec, but couldn't get a clean split...an elongated oval. That is really pushing the limit of the 127mm.

Dave
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Stellarvue SVX127D
http://www.unitronhistory.com

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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#14

Post by Bigzmey »

Unitron48 wrote: Sat May 04, 2024 11:34 pm
Bigzmey wrote: Sat May 04, 2024 10:47 pm
Good job on STF 1734, Dave! What scope did you use?

How is your typical seeing?

Delos have a good following, I am sure you will like either. The choice depends on your current EPs lineup. What is your next EP stepping from 22mm Panoptic?

Thanks, Andrey. I was using my Stellarvue SVX127D, 127mm, f/8. My typical seeing at my home location is 3 or 4/5. I have a large gap in TV's (22mm Panoptic, then 10mm Radian) so either would work. I may get both!

I attempted to split STF 1819 (7.7 and 7.9) at .9 arcsec, but couldn't get a clean split...an elongated oval. That is really pushing the limit of the 127mm.

Dave
Getting oval sounds nice. I rarely get to see airy disks clean enough to tell the difference in the airy disk shape.

If you mainly looking for doubles, lunar, planets I would get 14mm first.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Delos, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#15

Post by Bigzmey »

Forgot to tell. I have tried but failed to split STF 1819 in the past with 5" Mak, which is not surprising. Need to revisit with bigger guns. :D
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Delos, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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kt4hx Online United States of America
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#16

Post by kt4hx »

Most definitely well done on the VROD Andrey! Your report is outstanding, as I would expect from you. I am glad you like the 17.3mm Delos. I have heard excellent things about the line, and them and the XWs compare very closely. Some prefer the ease of eye placement with the XWs over the Delos, but having not tried the Delos, I can't talk to that point. One certainly cannot go wrong with either line.
Alan

Scopes: Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob ||
ES AR127 f/6.5 || ES ED80 f/6 || Apertura 6" f/5 Newtonian
Mounts: ES Twilight-II and Twilight-I
EPs: AT 82° 28mm UWA || TV Ethos 100° 21mm and 13mm || Vixen LVW 65° 22mm ||
ES 82° 18mm || Pentax XW 70° 10mm, 7mm and 5mm || barlows
Filters (2 inch): DGM NPB || Orion Ultra Block, O-III and Sky Glow || Baader HaB
Primary Field Atlases: Uranometria All-Sky Edition and Interstellarum Deep Sky Atlas
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"Astronomers, we look into the past to see our future." (me)
"Seeing is in some respect an art, which must be learnt." (William Herschel)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
"No good deed goes unpunished." (various)
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Bigzmey Online United States of America
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#17

Post by Bigzmey »

Thanks Alan! I read reports about somewhat tricky eye placement for Delos and was a bit hesitant. However, 17.3mm feels very similar to XWs. Very comfortable EP.

When I get some stable and dry weather I am curious to compare XWs vs Delos on faint galaxies. It will be a bit of pears to apples since Delos 17.3mm falls right in between 20mm and 14mm XWs. But I am just looking to see if it would give me any advantages as a step in between two XWs.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Delos, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Virgo Doubles, part 3 and TV Delos 17.3mm first light

#18

Post by jrkirkham »

Thank you for the report.
Rob
Telescopes: 50mm refractor, ED80 triplet, 90mm makcass, 10" dob, 8"SCT, 11"SCT
Mounts: Celestron CGX, Orion Sirius + several camera tripods
Cameras: Canon 6D, Canon 80D, ZWO-ASI120MC
Binoculars: 10x50, 12x60, 15x70, 25-125x80
Observatory: SkyShed POD XL3 + 8x12 warm room
AL Projects Completed: Lunar #645, Outreach #0280, Universe Sampler #93-T, Binocular Messier #871, Messier #2521, Messier Honorary #2521, Constellation Hunter Northern Skies #112, Planetary Transit Venus #1, Galileo #26, Outreach Stellar 0280, Meteor Regular #157, Solar System Telescopic #209-I, Observer Award #1
AL Projects Currently in Process: Double Stars, Comet, Lunar Evolution
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