Caldwell 14 Double Cluster in Perseus

 Posted: Aug 17th, 2026
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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
10
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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