M106

 Posted: Apr 2nd, 2024
Show astrometry on hover
NGC
IC
HD
Technical Info
Telescope/Lens: Самодел на объективе TS115/7 APO Triplet
Camera: ToupTek IMX571
Mount: МТ-120
Guide Scope: Искатель 50
Guide Camera: T7m
Software: NINA, Pixlnsight, ФШ
Accessories: Флаттенер 1.0 Sky Rover 130 APO
Exposure:
45 x 180" ISO/Gain: 100 - УФ/ИК SVBONY 2
Orange, Bortle 6 zone:
 Ekaterinburg Rayon Ozera Gluhoe, Russia
 Mar 29th, 2024
2 h 15 m
1686
Resolution: 6104x4032 px
Scale: 3899 KB
And again M106, but this time with a completely different telescope...
I specifically decided to compare two tubes: the SW Quattro 8S and my homemade one with a TS115/7 APO Triplet objective. Why not compare? The focal lengths are almost the same—760mm and 800mm respectively—though the relative apertures are f/3.8 versus f/7.
Well, for some reason, I like the triplet more, especially how it renders an even field across the entire frame, but there's a problem with strange rays on bright stars. Right now, it's disassembled again—I'm shortening the tube a bit (there's not enough inward travel for the 0.8 reducer) and adding reflective baffles; maybe that's the issue.
Let me know in the comments which one you prefer and what you don't like. Thanks.
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