Spring 2021 – Daysprings Observatory
I put a QHY268M CMOS camera into the Observatory to replace the significantly larger pixel sized Apogee U8300 that has been hanging around since the very early days and is starting to hiccup. These were all test images with 3 minute exposures from my fairly light polluted suburban back yard observatory. (SQM is 20.0 to 20.4 depending on season and quality of the night.) Most images are 2-3 hours total exposure in LRGB. Some images were a total loss due to filter wheel problems and filter shift causing incompatible flat frame corrections. Corrective actions have been taken to secure the filters and ensure proper indexing. As it is, none of these images are great but I can’t bring myself to throw them out so think of this as a first light post of sorts for the QHY268M.
M95
A barred spiral galaxy approximately 33 million light years away.
M108
M108 is a barred spiral in Ursa Major and contains about 125 billion solar masses.
M13
M13 is a globular cluster of several hundred thousand stars in the constellation Hercules.
M106
M106 is an intermediate spiral galaxy in Canes Venatici with a detected supermassive black hole at it’s core. It resides approximately 22-25 million light years away. It’s one of the largest and brightest nearby galaxies.
The Leo Triplet
The Leo Triplet, also known as the M66 group, contains M65, M66, and NGC 3628 commonly called the Hamburger Galaxy. The galaxy group resides approximately 35 million light years away.
After missing the BFSP at Cherry Springs State Park, PA last new moon we were anxious to get out for one last hurah for the year. Weather looked great initially from midweek into the weekend but rapidly went downhill as we got closer to the weekend. We did however have an amazingly clear Weds night and clear until 3:00am or so on Thursday.
Friday morning arrived with clouds and slightly warmer temps (no frost) than Thursday morning. The sunrise was spectacular.
I am not a galaxy imager. I’m at home with short refractors imaging large nebula in our own galaxy. Spring and Fall are more or less galaxy season though if you want to be able to image the same object the majority of these longer nights. So I picked out a decent size bright galaxy and dusted off the long f/ratio 5″ refractor and gave it a try. It’s not without it’s problems but nice to see a 28 year old refractor still collecting photons!
With weather looking wet and wild for the 2019 Cherry Springs Star Party and things looking slightly less soggy at Calhoun we decided to cancel on Cherry Springs and gamble on Calhoun. Good thing we were setup on the top of a ridge so we never had to deal with muddy conditions considering all the rain we didn’t know was coming.
Due to a moisture breach of my camera causing frosting issues which caused me to throw out all but 4.5 hours of data out of 18 I figured I might as well post this as it’s not going to get much better. Image scale was 1.31 arcsec/pixel which seems to give fairly decent sampling for the average seeing here in East Tennessee. Imaging location just outside Clinton, TN with average SQM measurements ranging from 20.1 to 20.4 mag/arcsec^2.
NGC 206 is the brightest star cloud in the arms of the Andromeda Galaxy visible to us here on Earth. You often see M31 imaged wide field but there is a wealth of detail to be found in the star clouds and dust lanes that start to pop out with a little more focal length. Taken late last year from my back yard.
We’re in Galaxy Season and without the 10″ RC I’ve instead focused on the 5″ refractor with a small pixel size camera to squeeze out some detail. Imaged from the backyard observatory in ~20.5 mag/arcsec^2 skies.