Sign up

Maurycy's Blog

Not verified No WebSub updates No webmention support Not yet validated

I sometimes post stuff here

Public lists
davewiner/hackerNewsStars
Fetched

Maurycy's Blog

Regressive JPEGs:

One of the cool features of JPEG files is that there's the option to save low frequency components first. This means that a partially downloaded image will be displayed at low resolution instead of being cut off. In the file, this works by breaking up the compressed data...

Maurycy's Blog

NGC 7497, etc.

North is up (aprox). 0.53 "/pixel. [24' x 23' field] FWHM = 3.75" A relatively unremarkable spiral galaxy... but hey, what's that in the background? Click to toggle annotations. (needs JS) Well, it's not actually in the background: the nebula is closer than the gal...

Maurycy's Blog

Making cooled clothing:

So, summer gets really hot, and it's not going to get better anytime soon. At my place, it isn't actively dangerous yet, but it's still unpleasant. A normal air conditioner uses a low boiling-point liquid: something like liquid propane will boil all the way down to -42 ...

Maurycy's Blog

The Tadpole galaxy:

North is up (exact, mirrored). 0.53 "/pixel [18.8' x 7.4'] FWHM = 4.2" This galaxy has a massive (and rather bright) tidal tail, but I can't see an obvious companion galaxy. The general consensus is that there's a second galaxy behind it... although a nearby elliptical...

Maurycy's Blog

Arp 90

North is up (mirrored, exact). 0.53"/px [15' x 9.2' field]. FWHM = 3.9" Arp 90 is the two interacting galaxies in the east. The west of the image has a wierd distorted galaxy (?), with a similar redshift to the interacting pair. This means it could be a tidal fragme...

Maurycy's Blog

Stephan's Quintet

North is right (mirrored). 0.53"/pixel [17'x12' field]. FWHM=3.7" Ok, this is a crazy one. Five tightly spaced galaxies with visible tidal interactions: However, looking at redshift data, the blue spiral on the left is ten times closer than all the other objects:...

Maurycy's Blog

Arp 38: not that peculiar

Data is from 2026-06-20. North is right. 0.53"/pixel (27'x27' field). FWHM=4' A nice, if rather small (~100") edge on spiral galaxy. Arp filed this one under "low surface brightness companions", but the companion doesn't seem to exist. There's a bright spot to the...

Maurycy's Blog

Arp 293: More interacting galaxies

North is right. 0.52"/pixel (18'x9' field) FWHM=4.5" The pair of galaxies near the center is NGC 6285 (top) and NGC 6286 (bottom). The lower one has a distinct tidal trail below it, and a faint bridge to the upper galaxy is visible. Both sit around z=0.018. The edge...

Maurycy's Blog

Glassblowing #3: A better thermionic diode

My last attempt at a vacuum tube technically worked, but not very well because there was a lot of glass between the anode and cathode: Because of this, many any electrons that miss anode and build up on the glass. This negative charge will keep accumulating until it's...