Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Extremely wide field
Getting plate-solving status, please wait...


Powered byPixInsight
Getting plate-solving status, please wait...


Powered byPixInsight

Technical card

Imaging telescopes or lenses: Canon 70-200 f2.8 IS L

Imaging cameras: Canon EOS 5D Mark IV

Mounts: Losmandy GM811G

Software: Pleaides Astrophoto PixInsight 1.8 Ripley  ·  Sequence Generator Pro

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

Dates:March 9, 2018

Frames: 15x120" (30') ISO800

Integration: 30'

Darks: 25

Flats: 25

Bias: 25

Avg. Moon age: 22.15 days

Avg. Moon phase: 49.93%

RA center: 05h34m43s.438

DEC center: -00°4829.53

Pixel scale: 15.274 arcsec/pixel

Orientation: -4.730 degrees

Field radius: 12.257 degrees

More info:Open 

Resolution: 3340x4740

Locations: Camp Highroad, Middleburg, VA, United States

Data source: Traveller


This is my first deep sky photo.

The Canon 5D Mk IV with 70-200 f/2.8 IS was riding on a Losmandy GM811G. There were a total of 15 2-minute exposures at 70mm, f/4, ISO 800. Only 11 were usable due to airplanes. The mount was not guided.

Processing was done with PiInsight 1.8.

There are definitely optical aberrations present. This is a crop of the even larger frame but you can see chromatic aberration along some of the stars and what I think is coma towards the corners.

There is a an arc of grayish color that starts on the left side of the frame about the height of m42 and extends downward to the right going between Saiph and Rigel. I don't know if this was real or if this was leftover sky glow or some other artifact.

It always amazes me how many stars there are in the sky that we can't see with the unaided eye. Almost too many to make an aesthetically pleasing image. I tried to tone them down some but there are a lot of stars.

Comments and critiques are welcome! I'd love to learn how to improve.

In the next month I'm planning to add an 80mm refractor, guide scope and guide camera but until then I'll be continuing with just the camera on the mount.