Tag Archives: September

An Open Cluster with Red Giants – NGC 7419

Here is a view of the open cluster designated NGC 7419 in the constellation Cepheus. This cluster is between 7,500 and 11,000 light years away. Its location is behind some dark nebulae which reddens the color of the stars. The cluster does contain no less than five red supergiant stars – moved up to my top ten list for open clusters!

An Open Cluster with Red Giants – NGC 7419

Tech Specs: Meade 12” LX90, Celestron CGEM-DX mount, Canon 6D stock camera, ISO 1600, 12 x 60 second exposures using Backyard EOS, 5 x 60 sec darks and 5 x 1/4000 sec bias frames, guided using a Canon 100mm lens with an attached ZWO ASI290MC camera. Image Date: September 22, 2017. Location: The Dark Side Observatory in Weatherly, PA.

Planetary Nebula NGC 6572 in Ophiuchus

This is the bright planetary nebula designated NGC 6572 in the constellation Ophiuchus. I was not able to bring out any inner details of this planetary nebula during this imaging session. I’m guessing many shorter exposures are needed. I have seen some posts on CloudyNights.com that show some sketches of an outer shell – worth checking out if you have the time (https://www.cloudynights.com/topic/550264-ngc-6572-outer-shell/).

Planetary Nebula NGC 6572 in Ophiuchus

Tech Specs: Meade 12” LX90, Celestron CGEM-DX mount, Canon 6D stock camera, ISO 1600, 11 x 60 second exposures using Backyard EOS, 3 x 60 sec darks and 3 x 1/4000 sec bias frames, guided using a Canon 100mm lens with an attached ZWO ASI290MC camera. Image Date: September 9, 2017. Location: The Dark Side Observatory in Weatherly, PA.
Center (RA, hms): 18h 12m 06.313s, Center (Dec, dms): +06° 50′ 32.690″, Size: 29.5 x 26.3 arcmin.

Clear skies!

…Tom

Globular Cluster NGC 6760 in Aquila

NGC 6760 is a small globular cluster in the constellation Aquila, dark skies and good seeing are required for any star separation.  It is listed with a magnitude of 9.0, depending on the reference, distance is approximately 24,000 light years from Earth.

Globular Cluster NGC 6760 in Aquila

Tech Specs: Meade 12” LX90, Celestron CGEM-DX mount, Canon 6D stock camera, ISO 1600, 17 x 60 second exposures using Backyard EOS, 3 x 60 sec darks and 3 x 1/4000 sec bias frames, guided using a Canon 100mm lens with an attached ZWO ASI290MC camera. Image Date: September 9, 2017. Location: The Dark Side Observatory in Weatherly, PA.

Center (RA, hms): 19h 11m 11.362s, Center (Dec, dms): +01° 01′ 24.324″, Size: 25.8 x 20.4 arcmin.

Clear skies!

…Tom

The Lunar X – September 27, 2017

Here is a view of the famous Lunar X spot which appears at the First Quarter phase of the moon. It is caused by reflection effects of the sun on several topographic features of the moon.

Tech Specs: Meade 12″ LX90 telescope, Canon 6D, best 50% of 1500 frames. Date: September 27, 2017. Location: The Dark Side Observatory, Weatherly, PA.

…Tom

61 Cygni – Binary Star System

61 Cygni is a famous binary star system located in the constellation Cygnus. The two stars, both dwarf stars that show a neat orange tint, and both are smaller and more faint than our Sun. The two stars take nearly 700 years to complete a single orbit around each other. They are also famous for exhibiting a large proper motion, motion across the sky as seen from Earth, of over 5 arc-seconds per year, it has been dubbed by some as “The Flying Star”. The large proper motion is at least partly addressed by the stars close proximity to the Earth, only about 11 light-years away.

Tech Specs: Meade 12” LX90, Celestron CGEM-DX mount, Canon 6D stock camera, ISO 800, 45 second exposure using Backyard EOS, no darks or bias frames, guided using a Canon 400mm lens with an attached ZWO ASI290MC camera. Image Date: September 9, 2017. Location: The Dark Side Observatory in Weatherly, PA.

Additional information:

EarthSky (http://earthsky.org/brightest-stars/61-cygni-suns-near-neighbor)

Wikipedia (https://en.wikipedia.org/wiki/61_Cygni)

Sky and Telescope (http://www.skyandtelescope.com/observing/on-the-move-with-barnards-star-and-61-cygni06032105/)

…Tom

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