Four astrophotographers, 6 telescopes, 5 cameras and 129 hours of data. This is a collaboration image. We pooled our data and processed in PixInsight... the Iris Nebula in Cepheus.

Telescopes:

• Starfield Optics 8" Astrograph

• Skywatcher Esprit 100mm Refractor

• Explore Scientific 127mm CF Refractor

• OGS/RCOS R-C 10"

• Meade RCX 10"

• Skywatcher Esprit 150mm Refractor

Cameras:

• QHY268M

• QHY268C

• Atik 11000

• QSI683

• QHY16200A

Filters:

• Optolong L-R-G-B

• Astrodon E series L-R-G-B

• Astrodon True Balance L-R-G-B

Total integration time:

• 129 hours

Data acquired from:

• Kitchener, Ontario, Canada

• Guelph, Ontario, Canada

• New Mexico, USA

• Sanborn, NY, USA

Processed in PixInsight

Copyright: Shawn Nielsen / Warren A. Keller / Ron Brecher / Peter Proulx

Image description 

Ngc3511 is an intermediate spiral galaxy located 45,000,000 light-years away in the southern constellation of Crater. Appearing at lower-right, it was discovered in 1786 by William Herschel, and is about 70,000 light-years across. At upper-left is the face-on SBc spiral, NGC 3513, gravitationally related to 3511.
Many thanks to my collaborator and friend, Mike Selby, who acquired and calibrated this fine data from Observatorio El Sauce, Chile. I dedicate this image to fellow astrophotographer and friend, Rogelio Bernal Andreo, on the passing of his beloved wife, Ariana. May she go among the imperishable stars!

Copyright: Warren Keller

NGC 1555 in Taurus is also designated as SH2-238 in the Sharpless Catalog. Illuminated by the bright golden star, T Tauri at center, Hind's Variable Nebula is a Herbig–Haro object.  NGC 1555 was discovered in 1852 by English astronomer John Russell Hind.



PlaneWave 17" CDK, U16M, Paramount ME, PixInsight 1.8 Acquisition by Bill Snyder at SRO

Copyright: Bill Snyder (Acquisition) and Warren Keller (Processing)