Galaxy M101 in LRGB filters

Posted: Jul 21st, 2025

Technical Info

Telescope/Lens: Sky-Watcher 300/1500

Camera: ZWO ASI 294MM-Pro

Mount: iOptron CEM70

Guide Scope: SW EVOGUIDE 50ED

Guide Camera: ZWO120-mini

Software: NINA, PixInsight, GraXpert, PhotoShop

Exposure:

25 x 180" ISO/Gain: 120 - L

15 x 180" ISO/Gain: 120 - R

15 x 180" ISO/Gain: 120 - G

15 x 180" ISO/Gain: 120 - B

Green zoneLight Pollution:

Novoe Dubovoe, Russia

Jun 15th, 2025

3 h 30 m

472

19

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Resolution: 2000x1429 px

Scale: 1357 KB

Alexander Zaitsev

204

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Comments

What is the crop factor here?

14 Aug, 2025 Reply

Have you weighed the tube with all the accessories? I'm curious how many kilograms the mount is carrying in total.

14 Aug, 2025 Reply

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