Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 6946
NGC6946 with 10"LX200 @f/5.0, Joachim Plocinski
NGC6946 with 10"LX200 @f/5.0
Powered byPixInsight

NGC6946 with 10"LX200 @f/5.0

NGC6946 with 10"LX200 @f/5.0, Joachim Plocinski
NGC6946 with 10"LX200 @f/5.0
Powered byPixInsight

NGC6946 with 10"LX200 @f/5.0

Equipment

Loading...

Acquisition details

Loading...

Description

This image was taken under severe conditions with full moon and very high humidity so the corrector fogged own. Of 5 hrs exposures it was only aprox 1 hr was useful and then with severe gradients.

This is only a test image to check flatness of the FOV after collimation the scope at f/5.0 with use of the CCD. The collimation offset was almost 3 arcmin. After collimation the field flatness is much improved.

The full frame still has some uneven distortions across the field so further testing must be done.

This is a 0.6x crop of the full frame.

There were some tracking issues due to high declination, but all in all its ok I think.

A new version to come later when the moon is down and the sky is clear!

This collimation procedure is not dependent on seeing conditions and is very good, check it out on this link:

http://www.mpas.asn.au/multipledefocusedstarcollimation.htm

Comments

Sky plot

Sky plot

Histogram

NGC6946 with 10"LX200 @f/5.0, Joachim Plocinski