Search found 90 matches

by ChrisLX200
Mon Oct 17, 2016 9:30 pm
Forum: Gallery
Topic: M31 Andromeda Galaxy [Ha]LRGB
Replies: 3
Views: 2479

Re: M31 Andromeda Galaxy [Ha]LRGB

Cheman wrote:better. did you use the HDR>reveal? I find it does a very good job with galaxy cores.
Che
Thanks Che, yes but I find I have to strongly reduce the magnitude of the effect before the result becomes acceptable!

ChrisH
by ChrisLX200
Mon Oct 17, 2016 12:36 am
Forum: Gallery
Topic: M31 Andromeda Galaxy [Ha]LRGB
Replies: 3
Views: 2479

Re: M31 Andromeda Galaxy [Ha]LRGB

re-process, tried to control the core a bit better :-)

Image


ChrisH
by ChrisLX200
Sun Oct 16, 2016 8:17 pm
Forum: Image Processing Troubleshooting
Topic: LRGB what's happening here?
Replies: 3
Views: 2236

Re: LRGB what's happening here?

How much did you have to crop it by, Chris? Even a fairly hefty 100 px per side crop doesn't get rid of the effect and the owner (who is a pretty experienced astro imager) has already cropped it (according to post 20 in the linked thread). Best to use AutoDevelop first and look critically at the ed...
by ChrisLX200
Sun Oct 16, 2016 6:45 pm
Forum: Gallery
Topic: M31 Andromeda Galaxy [Ha]LRGB
Replies: 3
Views: 2479

M31 Andromeda Galaxy [Ha]LRGB

Taken with NP127is, Moravian G4-16000, Baader and Chroma filters, 10-Micron GM2000HPS. Processed in StarTools v.1.4

Image


ChrisH
by ChrisLX200
Sun Oct 16, 2016 6:41 pm
Forum: Image Processing Troubleshooting
Topic: LRGB what's happening here?
Replies: 3
Views: 2236

Re: LRGB what's happening here?

It needed cropping before doing anything else, there were stacking artifacts and they cause this effect.

ChrisH
by ChrisLX200
Thu Jun 30, 2016 12:29 pm
Forum: Gallery
Topic: My most recent - ic2177, Heart neb, Rosette
Replies: 8
Views: 4631

Re: My most recent - ic2177, Heart neb, Rosette

Chrisa, I'm new to NB imaging and everything I get is green because of the H-A strength. When you process the channels in ST, what do you do to balance the colors so as to get a more pleasing image? These are great! That's a common problem, the Ha channel is usually the strongest and it will tend t...
by ChrisLX200
Mon Feb 29, 2016 3:39 pm
Forum: Gallery
Topic: M78
Replies: 4
Views: 2627

Re: M78

Very nice detail in the reflection neb Che, maybe a bit more saturation would be nice?

ChrisH
by ChrisLX200
Thu Feb 04, 2016 1:03 am
Forum: Feature Requests
Topic: fringe killer filter add blue back to central star
Replies: 39
Views: 36799

Re: fringe killer filter add blue back to central star

I'm not sure if it's possible but... if you can apply the 'Magic' tool to just the Blue channel that would effectively shrink the blue halos without losing saturation in the star cores. If you cannot do it in one step like this (and I've never tried this so I don't know for sure) then you could, as ...
by ChrisLX200
Thu Feb 04, 2016 12:48 am
Forum: Image Processing Troubleshooting
Topic: amp glow
Replies: 5
Views: 3317

Re: amp glow

Hi OK. Thanks. Just to be sure: subs: Is this 20 of everything or 5 of each. Or something else? What does 'subs' mean? FOV: randomly hit the ra and dec nsew keys on the handset before each light frame? Sorry if this is all rather basic, but I really appreciate your time. 'Subs' = Sub-Exposures whic...
by ChrisLX200
Wed Feb 03, 2016 12:45 pm
Forum: Image Processing Troubleshooting
Topic: amp glow
Replies: 5
Views: 3317

Re: amp glow

I don't see any evidence of amp glow just a general red bias which is commonly caused by light pollution. With a DSLR you need many more than 4 subs (start with 20), and you should also use dithering between subs (which means to move the FOV a few pixels each time in a random pattern) to even out th...