July 7, 2013

NGC 6910, Sadr, and IC 1318 (July 2013)


The star cluster in the upper left is NGC 6910.  I took a close-up image of it a couple of years ago with the 10" Newtonian, here, but I wanted to go back for a view of the larger context.


The bright star to the right of the cluster is Sadr, or Gamma Cygni.  It is the heart of (the constellation) Cygnus, the Swan.

The nebulosity throughout the image is known as IC 1318, though this is not all of it.  IC 1318 covers an area all around Sadr.

This is second light with the AT65EDQ.  This image is also a test of the TeleVue focal reducer NPR-1073.  The 65EDQ's only obvious drawback is its speed.  TeleVue's 0.8x reducer takes the 65EDQ down to f/5.2, plenty fast for my purposes.  Star images are not perfect in this image, but they are certainly close enough for me (and I'm not sure where the fault lies, at this point).

The image has been reduced slightly to lessen the effect of lingering noise in the image.

Telescope: Astro-Tech AT65EDQ and TeleVue NPR-1073 (eff. at f/5.2)
Camera and Exposure: SXVF-H9C (35x480"), Alnitak Flat-man flats
Filter: IDAS LPS-P2
Guiding: Meade DSI Pro and Hutech 50mm
Mount: Takahashi EM-10
Software: Nebulosity, Maxim DL, Photoshop CS3 (one Carboni action)
Location: The Woodlands, TX

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