Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 7789
NGC 7789, Caroline's Rose, LRGB, 86% waning moon, turfpit
NGC 7789, Caroline's Rose, LRGB, 86% waning moon
Powered byPixInsight

NGC 7789, Caroline's Rose, LRGB, 86% waning moon

NGC 7789, Caroline's Rose, LRGB, 86% waning moon, turfpit
NGC 7789, Caroline's Rose, LRGB, 86% waning moon
Powered byPixInsight

NGC 7789, Caroline's Rose, LRGB, 86% waning moon

Equipment

Loading...

Acquisition details

Loading...

Description

A first serious attempt to get to grips with LRGB filters. The conditions were not ideal with NGC7789 on one side of a tree and the moon on the other. At last the LRGB colour balancing using ratios has been tested.

The RGB ratio used was 1.7 : 1 : 1.5. RGB was bin 2x2 with 60s exposures. L was bin 1x1 with 90s exposures. The ratios were derived based on the work done by Brian Morgan at https://u235.herokuapp.com/#color-balance-instructions.

AstroDMx Capture for Linux (Fedora 30) v0.62.57 was used for data acquisition. This was a good workout for the newly released version.

Calibration, registration, stacking and RGB Composition were carried out with Siril. Final (minimal) processing used Gimp.

It will be interesting to revisit this target when there is no moon.

Dave

Comments

Sky plot

Sky plot

Histogram

NGC 7789, Caroline's Rose, LRGB, 86% waning moon, turfpit