Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  HD103829  ·  M 109  ·  NGC 3992
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Barred Galaxy M109 — It's Galaxy Season!, Dave Rust
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Barred Galaxy M109 — It's Galaxy Season!

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)
Getting plate-solving status, please wait...
Barred Galaxy M109 — It's Galaxy Season!, Dave Rust
Powered byPixInsight

Barred Galaxy M109 — It's Galaxy Season!

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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Description

I need to track down the source of the diagonal streaks in the stars. May be dried residue on the camera window or perhaps the back surface of internal flattener. I've checked the front optical glass plate, which I keep quite clean (and never with straight strokes).

Other than mirrors (which are pristine) there's no other glass in the pathway.

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Barred Galaxy M109 — It's Galaxy Season!, Dave Rust