m64

[p1taylor]

Hi All,

did this beginning of this year, think this is best so far, all comments welcome, rcx400 10", h9c, guiderd loadestar and phd, 27x120 seconds, prosest in maxim, photoshop.

peter

[rcheshire]

A little too green. Needs some green channel noise reduction.

[p1taylor]

Hi Rowland,
Tank you for comments will try that, only thing not sure of how do I reduce noise in green channel, can do colour OK I think.

peter

[p1taylor]

Hi Rawland

this is a bit of green out it dos look a loot beter,

peter

[p1taylor]

Hi

A bit more playing in photoshop got this .

peter

[Geoff45]

Focus may be a bit off.
Geoff

[rcheshire]

Agreed - work on focus. Guiding is not too bad:)

[p1taylor]

Hi Guys

I have a Bahtinov mask, get near by star and center middle spike, then go to inspect in Maxim to see if it is a nice narrow pointed pyramid is this OK or is there a better way.

peter

[Alchemy]

Once you have the spike centered, focus is spot on. As long as your scope is properly collimated.... ( never had a rcx so can't help there) you will have nice images..... Note as a scope cools to ambient temp it's focus may change, so if you start with a warm scope at focus, an hour later as it cools it ....may.... Be out of focus, next time you do an imaging run, for your own info redo the focus test wih the bahtinov mask before you close everything up ( I reckon these masks give you the best focus possible so stick with it.)

If you have a lot of data.... 3 hrs or more, and the image is smooth you can start using deconvolution methods to bring out more detail, this needs to be done very carefully, trial and error with a small potion of the image is recommended.

[Alchemy]

I just had a close look at your image, if you look at the star shapes there's a bump to the right of all the stars, this is indicative of a guiding issue, this may just be one or two frames that have a trailed star, this could happen just due to a tiny bit of cloud popping over or even the settings in phd. Check all your light frames before you stack, just for a trial try using deepskystacker as when you load up your lights you can click on each of them and see which are best..... Also if you have lots of lights you can do an initial stack then go back to the stacking process and using the HWFM column cull out the worst images and restack.
For phd guiding, once it's calibrated, just watch the guiding on the screen if it's constantly overshooting then back off the RA aggression.

[p1taylor]

Thanks very much for info, cooling of scope not to much of a problem in observatory, unforchantly cannot re do lost subs but will do it again.

peter

[En1gma]

you know whats one thing I like about this photo.

It is the only astrophoto I have so far seen that looks like it has been scetched

That is awesome

But in terms of AP technique application. I am still working on that myself.

Rob

[p1taylor]

Thanks very much for comments, sorry but should scetched be stretched.

peter