new configuration for DIY 8" astrograph
- BABOafrica
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new configuration for DIY 8" astrograph
The focusing is manual, using a helical focuser. I made it from some spare camera parts with some modifications on a lathe.
You will note that I include pictures of using a laser & barlow combination to do the collimation. Works very well and is easy to do, especially with no secondary to worry about.
Not sure if this is going to work. But here is what it looks like.
BABO
Scopes: Stellarvue SV80 Raptor Carbon Fiber ED Doublet / Celestron SCT C8
Williams Optics 66mm APO / DIY 8" f/4 Newtonian astrograph / Nikon 180mm f/2.8
Mounts: Orion Atlas EQ-G / Celestron AVX / DIY mini-equatorial
Cameras: QHY163m / Fujifilm X-A1 (modded) / Fuji X-A2 (not modded) / Orion StarShoot Auto Guider
Filters: ZWO 7nm NB set / ZWO LRGB set / ZWO Dual Band / Astronomics UHC
- Peppy
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Re: new configuration for DIY 8" astrograph
Cams, Player One Uranus C pro, Cannon, T3 self mod, T2i self mod F/S, ZWO 120 mc.
- sdbodin Online
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Re: new configuration for DIY 8" astrograph
BTW, I like your mount's latitude setting, almost an alt/az if aimed east/west.
Steve
Cameras; Atik 460ex mono, Zwo ASI1600MC-cool, QHY5L-II color and mono
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Re: new configuration for DIY 8" astrograph
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Re: new configuration for DIY 8" astrograph
Thanks for your comments, Henk!SkyHiker wrote: ↑Sun Mar 20, 2022 6:15 pm Is a decent piece of wood or board that hard to come by? If not, it should not be too hard to build a secondary holder. Or did you do it it because you don't have a secondary mirror? Messing with wires and filters in full view of the primary will be problematic.
I have a 70mm secondary. But it was a cheapie I got on ebay for $30. I made my own spider and holder. Not hard, as you imply.
I did an image of M42 with the old configuration (i.e., using the secondary mirror). That was taken with my Fuji X-A1 (modded).
You can see that image here:
viewtopic.php?f=66&t=23337
Mainly, I just wanted to experiment and see what would it would like to use this new configuration.
The wires are not a problem because they piggyback on the spider vanes.
The filters are not a problem either. I have set up my QHY163m with an internal filter holder (to save on the expense of buying a filter wheel).
It means I have to remove the camera to change filters. But that's true no matter what scope I'm using. So I did not see that as a drawback.
My next post shows a test from last night. It shows the result of a B-mask test and an image of M44.
All in all I was pretty pleased with the result.
Joe BABO
Scopes: Stellarvue SV80 Raptor Carbon Fiber ED Doublet / Celestron SCT C8
Williams Optics 66mm APO / DIY 8" f/4 Newtonian astrograph / Nikon 180mm f/2.8
Mounts: Orion Atlas EQ-G / Celestron AVX / DIY mini-equatorial
Cameras: QHY163m / Fujifilm X-A1 (modded) / Fuji X-A2 (not modded) / Orion StarShoot Auto Guider
Filters: ZWO 7nm NB set / ZWO LRGB set / ZWO Dual Band / Astronomics UHC
- BABOafrica
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Re: new configuration for DIY 8" astrograph
M44 is B&W since I only used the L filter.
BABO 8in Astrograph using a QHY163m (208-83-25) on
Processing with
48 x 4s
Joe BABO
Scopes: Stellarvue SV80 Raptor Carbon Fiber ED Doublet / Celestron SCT C8
Williams Optics 66mm APO / DIY 8" f/4 Newtonian astrograph / Nikon 180mm f/2.8
Mounts: Orion Atlas EQ-G / Celestron AVX / DIY mini-equatorial
Cameras: QHY163m / Fujifilm X-A1 (modded) / Fuji X-A2 (not modded) / Orion StarShoot Auto Guider
Filters: ZWO 7nm NB set / ZWO LRGB set / ZWO Dual Band / Astronomics UHC
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