Celestial hemisphere:  Northern  ·  Constellation: Draco (Dra)  ·  Contains:  NGC 5907
Getting plate-solving status, please wait...
NGC5907 - 20200804 - MAK90 at F5.4, altazastro
NGC5907 - 20200804 - MAK90 at F5.4
Powered byPixInsight

NGC5907 - 20200804 - MAK90 at F5.4

Getting plate-solving status, please wait...
NGC5907 - 20200804 - MAK90 at F5.4, altazastro
NGC5907 - 20200804 - MAK90 at F5.4
Powered byPixInsight

NGC5907 - 20200804 - MAK90 at F5.4

Equipment

Loading...

Acquisition details

Loading...

Description

Through the use of a total extension of 31 mm the 0.5x focal reducer was able to obtain a focal ratio of about 5.4 with the MAK90 (focal length of approximately 485-490 mm) to achieve greater luminosity at the expense of some vignetting in the image.

This is the second time I used this setup and the first time I paired it with the ASI178MM camera.

Also, this time I did use an IR-Cut filter to prevent stars from bloating and to limit the CA induced by the focal reducer's doublet.

Comments

Sky plot

Sky plot

Histogram

NGC5907 - 20200804 - MAK90 at F5.4, altazastro