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Arp 271 – Sky & Telescope

June 19, 2019 - Comment

Photographer Hal Heaton E mail halhjr@gmail.com Location of picture Arizona SkyCenter, Mt. Lemmon AZ Date/Time of picture Could four and June three, 2019 (new moon) Gear zero.Eight-m Schulman Telescope (f/7), SBIG STX (KAF-16803) digital camera outfitted with an anti-blooming gate, 2×2 binning, Astrodon Gen II RGB filters. Description This picture of Arp 271, comprising the


Photographer

Hal Heaton

E mail

halhjr@gmail.com

Location of picture

Arizona SkyCenter, Mt. Lemmon AZ

Date/Time of picture

Could four and June three, 2019 (new moon)

Gear

zero.Eight-m Schulman Telescope (f/7), SBIG STX (KAF-16803) digital camera outfitted with an anti-blooming gate, 2×2 binning, Astrodon Gen II RGB filters.

Description

This picture of Arp 271, comprising the interacting galaxy pair NGC 5426 and NGC 5427 in Virgo, makes use of imagery acquired remotely from the 9157-ft summit of Mt. Lemmon. CCDStack v2 was used to kind an RGB picture by combining the technique of largely unguided 15-min blue and inexperienced exposures taken on Could 4th (the chosen information star was too faint to be used), with the imply of guided 10-min pink frames from June third. The entire integration time in these three channels was 60, 65 and 50-min, respectively. PhotoshopCC 2019 was used subsequently to paint an artificial luminance picture ready from that consequence with the preliminary RGB body, and to carry out high-pass filtering, color-enhancement (lab-color-mode), star-shaping (because of the inclusion of non-guided pictures), artifact (e.g., residual mud donut) elimination, noise filtering and software of a light unsharp masks.

CATEGORIES
Astronomy Photos: Sky & Telescope’s On-line Gallery, Editor’s Selection from the Photograph Gallery, Nebula & Galaxy Photos

Hal Heaton

About Hal Heaton

Retired scientist and system efficiency analyst at Johns Hopkins APL.



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