M106 - A large galaxy in Canes Venatici

Robert Nik

54834

Deep Sky

Apr 5th, 2022

2476

NGC 4231NGC 4232NGC 4248NGC 4258

Resolution:: 2851x2832 px
File size:: 1240 KB

Show astrometry on hover

Photo description / processing

Border of the yellow-green zone. The image was taken during moonlight. Using a 2" UV IR Cut filter. 47 lights. Exposure 300". Gain 100. 30 biases. 13 darks. 30 flats. Unreliable guiding information, error 0.21-0.5". Polar alignment accuracy 1.07'.

Technical information

Telescope/Lens: Sky-Watcher 150/750PDS
Camera: ZWO ASI533MC
Mount: Sky-Watcher HEQ5 Pro
Guide Scope: SVBONY 60/240
Accessories: Baader MPCC Mark III
Software: DeepSkyStacker, AutoStakkert!, Fitswork, Adobe Photoshop 2015

Location: Мозырь, Беларусь

Light pollution

Yellow, Bortle 5 zone

Date taken: Mar 28th, 2022

Exposure

Mar 28th, 2022

Comments

Evgeniy Osharov

Either the mirror is over-tightened, or there's an issue with collimation. It also looks like it was shot from the edge of the frame and cropped. And the exposure data can be added to the technical information.

Apr 6th, 2022

Robert NikReply to Evgeniy Osharov

I only noticed after publishing that I could add the exposure data to the technical information.
The collimation seemed fine, which can't be said for the record-breaking guiding (0.21-0.36" up to 0.5") and the not-so-great final result with trailed stars. It seems someone somewhere deceived someone.

Apr 8th, 2022

Evgeniy Osharov

But it's accumulated nicely!

Apr 6th, 2022