Galaxy M101 imaged with my SeeStar S50 last week. 20 minute exposure with no editing.
It's high time that I started the learning curve to do variable star photometry with my SeeStar S50. I need some kind of "guide for dummies." Here's an image of the galaxy M101 I took last week. #SeeStarS50 #AAVSO
On 2024-06-20 and on 2025-07-18 the T CrB spectra were obtained at the Liverpool Telescope: exposures of 100 sec. The H-alpha line increased in flux.
Spectra in the AAVSO's Spectroscopic Database, AVSpec:
apps.aavso.org/avspec/obs/1...
apps.aavso.org/avspec/obs/1...
#astronomy #TCrB #AAVSO #spectrum
Bah. Tried, and failed, to see the Nova in Lupus this evening. Skies were reasonably clear, but just a bit too bright. I was barely seeing past mag 7.5, with the 10x50 binoculars.
Ah well, maybe somebody else will spot it?
skyandtelescope.org/astronomy-news/bright-no...
Very cool project! Amateur astronomers can collect data on variable stars. If you’re interested check out the AAVSO, aavso.org
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#astronomy #variablestars #aavso
Another observation project of another SPP (short period pulsator) - specifically an RR Lyrae type variable. This one is TZ Aur - a star whose brightness cycles every 9 hour, cycling up and down in brightness by a multiple 3.6x each time.
#astronomy #aavso #unistellar #citizenscience
I'm finally getting ready to try out my SeeStar s50. Work nights and cloudy skies have kept it in the box for months (I'm embarassed to write that, but it's true.) #SeeStar #AAVSO #Astronomy #AmateurAstronomy
Not sure what to post here just yet, so I guess I'll start with an exoplanet observation I made a couple nights ago :)
#citizenscience #aavso #exoplanets #exoplanetwatch
A series of rows of brightness estimates of T CrB for recent nights. Points for nights last week are mostly missing, indicating observers were looking at something else.
Something broke up the monotony of people making repeated normal observations of T Coronae Borealis last week. It's the most interesting thing to happen to this light curve so far. I wonder what it was :) #TCrB #aavso
Commemorative plaque of the Prussian #astronomer F. W. Argelander in #Klaipeda, #Lithuania. Argelander was the first astronomer to begin a careful study of variable stars. #AAVSO #astronomy
