M42 through a GOTO Dob

[mxgallagher]

Thought I would share my first go at imaging M42 with my 250mm DOB

Limited to taking 5s sub's - so as a test image I took 5x5s at iso 3200 and stacked with deep sky stacker

Any comments/advice would be welcome

Sent from my Nexus 4 using Tapatalk

[Alien 13]

Very nice image with only 5 seconds to play with i would def have a go with more subs and darks, flats and maybe a few at 1-2 seconds to get more detail within the bright areas.

well done.

Alan

[wxsatuser]

You caught quite a lot with 5 secs, well done.

[frugal]

There is an awful lot of data there for only 5x5 seconds. Well done.

[mxgallagher]

Thanks for the comments - was trying out the new camera my wife gave me for Christmas (EOS 70D).

Not sure how many dark frames to take - I know they should be the same exposure as the sub's and at the same temp, but is one enough?

Also how do I go about taking flats and again how many?

Sent from my Nexus 4 using Tapatalk

[Alien 13]

Flats are taken with a clear patch of light sky with the same equipment and focus that you has for your images, these are normally shot in auto mode to expose the sky but need to be bright but not over exposed.

The number of flats and darks need to be about the same as your images unless you take 100s then 20 or so will do.

Alan

[brettg40]

Very nice mate, what camera did you use?

[brettg40]

Just realised, you'd already said. A canon eos 70D?

[ken spencer]

Very nice, well done!

[mxgallagher]

Thanks for advice - next time its clear I'm planning to get back out and have an other go.

Downloaded BackyardEOS yesterday (30day free trial so probably 30days of cloud).

Thinking I will try and get alot more subs and some darks/flats

Was also wondering if anyone had any suggestions for other targets that I might be able to image, bearing in mind the short length of the subs due to AZ mount

Many thanks again

[Alien 13]

I think it would be worth having a go with anything you enjoy looking at visually if its a wider target than your scope can manage you can allways stitch images together so Andromeda galaxy perhaps?

Keep at it though you are taking good pictures which you can say "I did that".

Alan

[jarlaxle2k5]

Thanks for advice - next time its clear I'm planning to get back out and have an other go.

Downloaded BackyardEOS yesterday (30day free trial so probably 30days of cloud).

Thinking I will try and get alot more subs and some darks/flats

Was also wondering if anyone had any suggestions for other targets that I might be able to image, bearing in mind the short length of the subs due to AZ mount

Many thanks again

and also it could be better to reduce ISO level.

I think 1600 should be enough because M42 is quiet bright and your scope is a nice beast