Author Archives: Geoff Dryland


Hi All,

Got a new toy for Christmas and just waited for a clear night. Only one night so far, so have only managed a quick image of the B30 nebula in Orion.

The new toy is for processing, it’s the Straton star removal program.

Having taken only 6x5minute images in each of Red, Green, Blue and Ha, the data was stacked in Deep Sky Stacker. Next, each one was put through Fits Liberator. These master images were then all aligned in Maxim DL.

The RGB images were put through Photo Shop curves and combined then tweeked in the colour adjustments.

The Ha image was put through the new toy and had all the stars removed from it in 35 minutes (automatically of course!).

This was then put back in PS and combined in “Levels” with the RGB image. After a bit more fiddling in curves I got this result.

It sounds a long and complicated process……….IT IS!!

Anyway, for a first attempt I’m quite pleased with the result.



Crescent Nebula (SH2-105)

First attempt at imaging since the new floor was completed in the Observatory.

Focused by hand as the electric focuser is currently not working – hence not quite in focus.

This is a 7×5 minute stacked image taken through a Hydrogen Alpha filter. Telescope being a Takahashi Epsilon 180ED at f/2.8. (A brute to manually focus!) Camera; Atik 4021, cooled to -27 degrees. Guiding by PHD and all sitting on a modded EQ6.


Also an image of IC1318, the diffuse Hydrogen Alpha emission nebula surrounding ‘Sadr’ (upper right), the 2.2 mag star at the ‘heart’ of Cygnus the Swan.





Hi, I know I’m an old so’n’so but is it possible to have the old calendar of the club reinstated?

I don’t own a smart phone or any of the “modern” devices on the computer, just the basic stuff so I am unable to “download” anything in the formats that  are given.