Hemisphere:  Northern  ·  Constellation: Vulpecula (Vul)  ·  Contains:  14 Vul  ·  Dumbbell nebula  ·  M 27  ·  M27  ·  NGC 6853  ·  PK060-03.1  ·  The star 14Vul
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M27 and surroundings, 



    
        

            Linda
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Getting plate-solving status, please wait...
M27 and surroundings, 



    
        

            Linda
Powered byPixInsight

Imaging telescopes or lenses: Stellarvue SV80-3SV

Imaging cameras: ASI294MC Pro

Mounts: Losmandy GM811G

Guiding telescopes or lenses: Stellarvue F050G

Guiding cameras: ZWO ASI178MM

Software: Pleaides Astrophoto PixInsight 1.8 Ripley  ·  PHD2  ·  Sequence Generator Pro

Accessory: DewBuster Dew Controller  ·  Losmandy Lightweight Tripod  ·  Dew-Not DN005 Dew Heater  ·  Goal Zero Yeti 400


Dates:Aug. 29, 2018

Frames: 80x60" (1h 20') (gain: 250.00) 0C bin 1x1

Integration: 1h 20'

Darks: ~70

Flats: ~100

Bias: ~500

Avg. Moon age: 17.56 days

Avg. Moon phase: 91.41%


Astrometry.net job: 2229129

RA center: 19h 59' 41"

DEC center: +22° 40' 51"

Pixel scale: 1.959 arcsec/pixel

Orientation: 89.372 degrees

Field radius: 0.645 degrees


Resolution: 2067x1161

Locations: Home, Broadlands, VA, United States

Data source: Backyard

Description

I've been having trouble making the transition from unguided DSLR photography to guided low focal length refractor imaging for the last few months. Part of it was a couple of mount issues and part of it was me, but I think I've worked through most of the issues, at least well enough to get some decent data.

The is a medium crop of a wider field around M27. The plan was to let the system image all night while I slept but, of course, 90 minutes or so later, the clouds started scooting through the sky despite the forecast for clear skies. I ended up getting 80 subs of 60 seconds each.

I found the processing on this challenging, so much so that I want to go back and revisit it. Dealing with all those stars and all that dust in that region of the Milky Way was a bit beyond my meager skills. Even so, I'm happy to have finally got something usable and I'm looking forward to upping my processing game.

Many of the stars have a pinkish cast to them. I don't think I created that in processing. I'm assuming it's caused by dust causing a reddish shift in the color of the stars shining through the dust. If anyone can say for sure, please let me know.

This was also my first attempt with a ZWO ASI294MC Pro and I think I'm really going to like the camera. I can easily see the difference in the noise compared to an uncooled DSLR though it does give up a bit on field of view.

[I did get back to this and it's posted as revision B. I'm happier with this one but the stars still seem a bit overwhelming. Still a lot to learn about image processing...]

Comments

Revisions

  • M27 and surroundings, 



    
        

            Linda
    Original
  • M27 and surroundings, 



    
        

            Linda
    B
  • Final
    M27 and surroundings, 



    
        

            Linda
    C

B

Description: This is a reprocessing of the earlier image. It proves that I shouldn't try to process an image on only three hours sleep (as I did the first image) and that doing this takes some deliberation and thought. I'm a lot happier with this version though it was still a challenge keeping those thousands of stars from getting out of control. Constructive criticism is welcome!

Uploaded: ...

C

Description: This revision attempts to tame the stars.

Uploaded: ...

Sky plot

Sky plot

Histogram

M27 and surroundings, 



    
        

            Linda