Temp equalization AKA cool down time for small Mak?
- pakarinen
- Articles: 0
- Posts: 4038
- Joined: Fri Jun 14, 2019 3:33 pm
- 4
- Location: NE Illinois
- Status:
Offline
-
TSS Awards Badges
Temp equalization AKA cool down time for small Mak?
I realize going from 70 F to 20 F will take longer than 70 F to 60 F.
Thanks.
Man... That's some icky-tasting stuff!
=============================================================================
AT50, AT72EDII, ST80, ST102; Scopetech Zero, AZ-GTi, AZ Pronto; Innorel RT90C, Oberwerk 5000; Orion Giantview 15x70s, Vortex 8x42s, Navy surplus 7x50s, Nikon 10x50s
- JayTee
- Articles: 2
- Posts: 5651
- Joined: Thu Apr 25, 2019 3:23 am
- 5
- Location: Idaho, USA
- Status:
Offline
-
TSS Awards Badges
TSS Photo of the Day
Re: Temp equalization AKA cool down time for small Mak?
JT
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6R, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100 ∞ AP Gear: ZWO EAF and mini EFW and the Optolong L-eXteme filter
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
Searching the skies since 1966. "I never met a scope I didn't want to keep."
- pakarinen
- Articles: 0
- Posts: 4038
- Joined: Fri Jun 14, 2019 3:33 pm
- 4
- Location: NE Illinois
- Status:
Offline
-
TSS Awards Badges
Re: Temp equalization AKA cool down time for small Mak?
Man... That's some icky-tasting stuff!
=============================================================================
AT50, AT72EDII, ST80, ST102; Scopetech Zero, AZ-GTi, AZ Pronto; Innorel RT90C, Oberwerk 5000; Orion Giantview 15x70s, Vortex 8x42s, Navy surplus 7x50s, Nikon 10x50s
- Lady Fraktor
- Articles: 0
- Posts: 10030
- Joined: Mon Apr 29, 2019 9:14 pm
- 5
- Location: Slovakia
- Status:
Offline
Re: Temp equalization AKA cool down time for small Mak?
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1000101)
The only culture I have is from yogurt
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 5
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: Temp equalization AKA cool down time for small Mak?
That sounds about right, what I remember from when I had a small closed tube Mak.Lady Fraktor wrote: ↑Tue Mar 17, 2020 8:41 pm I would set it out about 30 minutes before hand if possible.
My sub
My MK66 can take 45 minutes. But since it’s a Rutten Mak with 3 secondary collimating screws it announces being good by stars ceasing to be triangles.
- Bigzmey Online
- Moderator
- Articles: 8
- Posts: 7734
- Joined: Sat May 11, 2019 7:55 pm
- 4
- Location: San Diego, CA USA
- Status:
Online
-
TSS Awards Badges
Re: Temp equalization AKA cool down time for small Mak?
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
- John Baars
- Co-Administrator
- Articles: 5
- Posts: 2763
- Joined: Sat May 11, 2019 9:00 am
- 4
- Location: Schiedam, Netherlands
- Status:
Offline
-
TSS Photo of the Day
TSS Awards Badges
Re: Temp equalization AKA cool down time for small Mak?
Isolating the tubewall on the outside doesn't take the equilibrium time down, as is believed by some. It simply mutes the seeing inside the tube. I take my isolated 102mm Mak out for grab &go on Jupiter as well. Didn't believe it at first. Until I noticed a transit of Callisto, hardly visible in my old 70mm Televue Pronto.
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.
- NGC 1365
- Articles: 0
- Posts: 368
- Joined: Mon Dec 02, 2019 8:30 am
- 4
- Location: NSW Australia
- Status:
Offline
-
TSS Photo of the Day
TSS Awards Badges
Re: Temp equalization AKA cool down time for small Mak?
- Ylem
- Articles: 0
- Posts: 7597
- Joined: Sun May 12, 2019 2:54 am
- 4
- Location: Ocean County, New Jersey
- Status:
Offline
-
TSS Photo of the Day
Re: Temp equalization AKA cool down time for small Mak?
Would not the insulation hold the heat in the scope?
What am I missing?
-Jeff
Member; ASTRA-NJ
Orion 80ED
Celestron C5, 6SE, Celestar 8
Vixen Porta Mount ll
Coronado PST
A big box of Plossls
Little box of filters
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 5
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: Temp equalization AKA cool down time for small Mak?
It reduces temperature differences. It's differential strain caused by temperature gradients that distort the optics.
Create an account or sign in to join the discussion
You need to be a member in order to post a reply
Create an account
Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute