File:Cygnus widefield (13 panels) (4541820233).jpg

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Subject: Medium widefield of Cygnus area -- NGC7000, NGC6888, IC1318, IC5067, IC5070 -- North America Nebula, Pelican Nebula, Crescent nebula, etc.

Image FOV: approximately 14.9 degrees by 15.1 degrees

Image Scale: 60 arc-second/pixel

Date: 2009/07/04

Exposure: 10 minutes for each panel, 13 panels = 2h10min total exposure, ISO800, f/4

Filter: Baader 7nm H-alpha

Camera: Hutech-modified Canon 30D

Lens: Leica APO Telyt-R 180mm f/3.4 at f/4

Mount: Astro-Physics AP900

Guiding: ST-402 autoguider and SV80S guidescope. MaximDL autoguiding software

Processing: Raw conversion and calibration with ImagesPlus; Gray conversion, levels adjustment with Photoshop CS4. No sharpening or noise reduction. Autopano Pro used to create the mosaic. Resizing and JPEG conversion with Photoshop CS4.

Remarks: Temperature at end: 41F; SQM-L readings start to end: 19.38, 19.63, 19.69, 19.80, 19.91, 20.06, 20.25, 20.36, 20.63, 20.94, 20.78 (setting moon, then high clouds moving in)
Date
Source Cygnus widefield (13 panels)
Author s58y

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by s58y at https://flickr.com/photos/45032885@N04/4541820233. It was reviewed on 19 December 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

19 December 2021

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Date/TimeThumbnailDimensionsUserComment
current11:27, 19 December 2021Thumbnail for version as of 11:27, 19 December 2021896 × 909 (335 KB)Siloepic (talk | contribs)Transferred from Flickr via #flickr2commons

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