Roger Samworth

Quiet Sun? – – – 23/08/2019

And then – –  –
Despite my forebodings the other day, look what turned up after being out all day today – – -!
Later (21:10 UT) :
From the images on the GONG web-site, it seems that this prominence was rapidly evolving, and reached its peak intensity at around 17:00 UT – just about the time I caught it. The beauty of solar observing and having a scope at instant readiness! I have to admit, however, that due to the Sun’s position, I had to forsake the window-sill in favour in the garage floor, pointing it through the open door!

Repocessed DSOs from 2015

Having dug out my images of Neptune and Triton from the blog archive in 2015 (

I was looking at the other DSO images in the same post – M27, M57, NGC2403 (C7) and NGC 6503.

I thought I would have a go at reprocessing them with another 4 years of GIMP-ery under my belt, so here they are. Given recent dialogue about faint DSOs, tracking etc, it might be interesting to note that all these images are with a scope on an alt-az (ie not equatorial) mount with individual images in the stack of no longer than 20 seconds exposure.

Neptune and Triton

I know that I keep banging on about the benefits of simple and cheap imaging but it IS a fact. For example, September “Sky at Night” says “- – – If you fancy a challenge, have a go at using a 250mm or larger instrument and a magnification of 250X and see if you can spot Neptune’s largest moon ,Triton. At mag 13.5 it requires good dark skies – – – -“.

Here is an image I got from from the light-polluted Midlands with the 8” SCT and PD a few years ago:

Say no more!