Caldwell 14 Double Cluster in Perseus

 Posted: Aug 17th, 2026
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NGC
IC
HD
Technical Info
Telescope/Lens: Askar 71F
Camera: ZWO ASI2600MM PRO
Mount: JUWEI 14
Guide Scope: ToupTek GS-200 AR
Guide Camera: ZWO ASI662MC
Software: Siril, Photoshop, Lightroom, StarNet++
Accessories: CAA, EAF, EFW, ASIAIR MINI, Askar Reducer x 0.75, Gemini PowerBox
Exposure:
16 x 120" ISO/Gain: 100 - Optolong L
3 x 120" ISO/Gain: 100 - Optolong R
3 x 120" ISO/Gain: 100 - Optolong G
3 x 120" ISO/Gain: 100 - Optolong B
Yellow, Bortle 5 zone:
 Samara, Russia
 Aug 17th, 2026
50 m
108
Resolution: 4285x2410 px
Scale: 10242 KB

The last photo with the CAA; today I removed it from the optical train because it still introduces a tilt that isn't noticeable on a small sensor, but with a larger sensor it's obvious. Now we'll manually adjust the required angles; it's a shame because it's a good piece of equipment, but you still have to keep an eye on it—it might act up. In any case, everything that happens, happens for the best.

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Comments

It needs to be tightened up and it will be good.
18 Aug, 2026 Reply
Poppy8micro Replied to Oleg Novoselov
The clamping plate itself with the thread, which one?
18 Aug, 2026 Reply
Oleg Novoselov Replied to Poppy8micro
To be honest, I don't remember anymore, but definitely not from the outside — small keys are needed there, and I didn't have them on hand. I went to a friend's workshop; before that, I also struggled with it and was about to give up and just turn the corrector as a whole, but I tightened it, and it's been working fine for three years now.
18 Aug, 2026 Reply
Poppy8micro Replied to Oleg Novoselov
Let me take a look. I just looked and turned the plate, and it seems some screws were slightly loose. Inside, the plate is held by Phillips screws that are tight, but underneath them might be what you're talking about. I'll check online. Thanks.
18 Aug, 2026 Reply

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