Nebulosity walkthrough

A quick Nebulosity walkthrough starting with a Fits file data set taken with an astrophotography CCD imager. This walkthrough assumes that you already have darks, bias and/ or flat frames made. This procedure is not written in stone and is my own interpretation of Craig Starks Nebulosity tutorials. The image acquisition by me on 11-3-10 and its IC434 (Horse Head Nebula). 3 Fits images of 10 minutes apiece are used. Note that at the beginning during 'preview' is where you determine which frames you will use, I already did that step and used the 3 frames I saved from a 1 hour session so 3 other frames were previously tossed out to save time here. Be sure to inspect your frames using the histogram slider on the right side before starting this preprocess routine, but dont make changes to your fts files in doing so, other than filenames.

Category:

Science & Technology

Tags:

• Nebulosity walkthrough
• Craig Stark
• Astrophotography
• Fits files
• Hubble
• Stark Labs
• astrophotography
• ic434
• amateur astronomy
• telescopes
• AT8RC
• autoguiding
• eq6 mount

[jwbullardxxiii]

Sound??

[guitarplayer4real]

@jwbullardxxiii its just a 'watch only' run through sorry about that. Are you needing help with anything specific? I do things a little differently now but it all works.

[jwbullardxxiii]

@guitarplayer4real No, just getting started in it and thought there was something wrong with the player. Have you used ImagesPlus at all?

[guitarplayer4real]

@jwbullardxxiii I have not used it but have heard good things about it.

[Djennings16]

Quick question for you... When I went through the same steps you did, I noticed that I end up with 3 stacked files, R, G and B instead of just a single stacked file. Not sure where I went wrong but something is not quite right. Any thoughts?

Thanks,

DJ

[guitarplayer4real]

@Djennings16 Sorry, I didnt see that you got it already lol... Atleast I hope that was it:-)

[Hallaran]

Nice shot of the Horsehead nebula!

[guitarplayer4real]

@Djennings16 That is a product of the capture settings I think and it sounds like you have "Color file format" setting to "save 3 seperate FITS" in the preferences. It should be set to RGB FITS: Maxim in preferences.

I've been playing back and forth with bad pixel map comparing the 2 processes and I think maybe bad pixel map is better, not sure yet though.

To deal with 3 seperate fits you need to use the Hubble pallette and actions to combine the 3.

[Djennings16]

I figured out the reason for the 3 seperate files, thx anyways. :o)