M109

Posted: May 11th, 2026

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Technical Info

Telescope/Lens: C11 EdgeHD

Camera: Player One Poseidon-C

Mount: iOptron CEM120

Guide Scope: C11 EdgeHD + OAG

Guide Camera: Player One Sedna

Software: PixInsight

Accessories: Lepus 0.63x reducer

Exposure:

1 x 600" ISO/Gain: 125 - Antlia QuadBand

25 x 300" ISO/Gain: 125 - Antlia QuadBand

20 x 180" ISO/Gain: 125 - Antlia QuadBand

Orange, Bortle 6 zone:

Moskva Kubinka Nedaleko, Russia

May 4th, 2025

3 h 15 m

138

14

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Resolution: 4697x3339 px

Scale: 9455 KB

129

40 arcminutes from the galaxy lies a bright 2.4 magnitude star of the Big Dipper.

The star is outside the field of view, but reflections of its light from the walls of the telescope's internal baffle

created several concentric colored arcs across the entire field of view.

I had to heavily suppress the sky background.

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Comments

A beautiful galaxy, and overall the frame is decent. I have a Sharpstar 0.95 corrector that also gave harsh rainbows around bright stars on a Newtonian. Then I got a Meyon 1x and it seems fine. But the Starizona 0.75x apparently has issues and produces a halo around stars.

17 May, 2026 Reply

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