Oldfield's Observation Log and Astronomy Topics
Welcome to my astronomy blog. I dedicate myself to the simplest form of amateur astronomy which requires only portable equipments. I have small refractors, small binoculars, a small mount, and a small H-alpha solar filter. Originally from a city where the people were proud of their light pollution, that is Hong Kong where I loved. Relocated to the UK since 2021.
Saturday, October 17, 2026
20261016 Omicron Cygni Region
Wednesday, October 14, 2026
20261013 West of Gamma Cygni (Sadr) Region
I will dedicate the whole session to this area, a very large diffused nebula.
Total 2.5 hours of exposure.
Monday, October 12, 2026
20261011 Not so clear night M52 with NGC 7635 and NGC 7538
The forecast was good but the sky didn't really clear up until 9:00pm. Not really cleared at all, but it worths to pull out the S30.
So I am re-doing M52, framing NGC 7635 as well NGC 7538 too.
Started at 9:05pm, and I hope I can get more than an hour of exposure.
81 minutes finally:
Thursday, October 08, 2026
20261007 The Double Cluster NGC 869 + NGC 884 and Comet 161P
Wednesday, October 07, 2026
20261006 IC 5146 Cocoon Nebula (again ) and also Coat Hanger
The sky was no good for the whole day, but it's clearing up so why not give it a run?
Let's try again and hopefully got more photons this time:
Stacking failed after around 1.5 hours.
So I switched to the coat hanger for a small mosaic, this one is interesting visually and the S30 could capture it via stitching:
Lovely, 46 minutes of total exposure.
Tuesday, October 06, 2026
New solar observation tool
I ordered a pair of 58mm solar filter for my Canon 18x50mm IS.
I choose glass filters instead of Baader film, since I want them to last longer.
My thousand oaks solar filter still survive after nearly 30 years of services!
I'm glad to have a chance to test them out this morning. Despite there are quite many clouds floating around, I got some really nice views. Sunspots were clear, with quite a lot of detail within!
The nice optics of the Canon 18x50 IS definitely shows a lot. With two eyes, it certainly helps, too. The image stablisation works wonder at 18x, it's just so convenient and powerful.
I've also ordered a herschel wedge for my refractor.
I shall test it later, and if it is good, I might import some more to the local market.
Saturday, October 03, 2026
20261002 IC 5146 Cocoon Nebula
It has been raining crazily.
The floor is still wet but the sky clear up suddenly.
Setting up the S30 is no brainer, the best part of this little piece of equipment.
It's 20:56 now, and exposure should begin before 21:00, I still have 1.5 hour of exposure hopefully.
After around 30 minutes of exposure, it rains. I didn't realise until stacking failure was reported. I pulled the S30 inside and use a fan to dry it, hopefully it's not soaked yet.
I should try this target again later.







