Resoldering Alex Pettit 21cm Yagi using lead-based solder with Rosin
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we think this aerial is not effective because of poor solder connection. I used lead-free solder and this may have meant that the solder joint was poor, so today some…
Results of solar photography session at LRO 17/9/2024
Sky Watcher Equinox Pro 100mm OTA HEQ5 Pro mount Daystar Quark hydrogen chromosphere filter 174MM camera (not cooled) Daystar interference eliminator ImPPG/Photoshop software Andy First 2 images are versions 1…
Use of an unusual complex tone curve in ImPPG to obtain excellent solar photo from my data 22/9/2024
I used the tone curve below on data from 17/9/2024 – worked well to produce nice inverted curve! Andy
Ptarmigan Triffid Dipole Array
Subject: RAG – Triffid Antenna Hi Andy I asked a former colleague from work to help identify your antenna. He had direct oversight of the Ptarmigan and Triffid projects whilst…
Solar Cooker purchased from ebay September 2024
This was mentioned on SARA mailing list – and then I saw someone selling one on ebay UK for £50, unused! This is effectively a 1.5m satellite dish which concentrates…
Eastern Veil Nebula (NGC 6992) taken with my Seestar at LRO 16/9/2024
20 minutes of data
First Light with my new Seestar S50 telescope at LRO: Andromeda Galaxy M31
This is a wonderful little device! Portable, fully automatic but I have found benefits from a little post-processing – in this case I stacked images using PixInsight’s Weighted Batch Pre-Processing…
Photos from the International Astronomy Show 2024
This show was held in Coventry, England, on 14/9/2024 – the show was excellent, both in terms of talks and stands by astro vendors, and well attended. The show differed…