Palomar Globular Clusters
The Palomar Globular Clusters are a unique and challenging list of 15 very faint globular clusters. Most of these were only found after scrutinizing plates from the Palomar Observatory Sky Survey (POSS). I stumbled upon one of these clusters while looking around in Starry Night Pro and building a list of targets for my next observing session. It took several imaging sessions to capture my first Palomar Globular.
The web site http://www.deepsky-visuell.de/Projekte/PalomarGC_E.htm - offers a photographic view and sketch of each of the Palomar globulars as well as a table reference.
Palling Around With Palomar Globular Clusters, by Bob King, August 17, 2016 at Sky and Telescope Magazine (https://www.skyandtelescope.com/observing/palling-around-with-the-palomar-globular-clusters/) offers a nice article on the Palomar clusters, photographs and finder charts.
Astronomy-Mall also contains helpful observation information and a table of the Palomar Clusters at (http://www.astronomy-mall.com/Adventures.In.Deep.Space/palglob.htm).
Below is a Google Sheet of data I found from several sources.
The information above has been combined from several sources, thus the size of each object is given as a range. The items highlighted in blue have been imaged (thus far). Below shows my attempts to image these elusive globular clusters.
Palomar 2
Palomar 5
Palomar 10
Palomar 11
Palomar 8
Palomar 13
Magnitude: 13.80Constellation: PegasusRA (J2000): 23h 06m 44.9sDec (J2000): +12° 46' 17"Size (mins): 1.5
Tech Specs: Meade 12” LX-90, Celestron CGEM-DX pier mounted, ZWO ASI071mc-Pro, Antares Focal Reducer, 95 x 60 second at 0C with darks and flats, guided using a ZWO ASI290MC and Orion 60mm guide scope. Captured using ZWO AAP and processed using PixInsight. Image date: July 30, 2021. Location: The Dark Side Observatory, Weatherly, PA, USA (Bortle Class 4).
Palomar 7
RA: 18:10:44.20Dec: -07:12:27.4Distance from Sun: 17.6 klyApparent Diameter: 21.0 arc minBrightness: 10.34 mag vis
Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO ASI2600MC camera running at 0F, 75x60 seconds guided exposures, Sky-Watcher EQ6R-Pro pier mounted, ZWO EAF and ASIAir Pro, processed in DSS and PixInsight. Image Date: August 10, 2023. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).