File:IC1396 with CLS filter (8535651436).jpg

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Original file ‎(4,752 × 3,168 pixels, file size: 4.27 MB, MIME type: image/jpeg)

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Subject: IC1396

Image Size: 4752 x 3168 (full; frame, 100% size) Image FOV: 15 degrees by 10 degrees (full frame) Image Scale: 11.4 arc-second/pixel

Date: 2012/10/12 (Processing backlog of old images)

Exposure: 18 x 5 minutes = 1.5 hours, ISO1600, f/2.8 Filter: Astronomik CLS Camera: Hutech-modified Canon T1i/500D Lens: Contax/Yashica 85mm f/2.8 Mount: Astro-Physics AP900

Guiding: ST-402 autoguider through TV-102iis guidescope, Maxim DL autoguiding software with 5-second autoguider exposures


Processing: Raw conversion and calibration with ImagesPlus; Aligning and combining with Registar. Final processing in Photoshop -- levels adjustment, cropping to 4752x3168 to remove ragged edges from alignment, JPEG conversion, etc.

Remarks: Temperature at start/end = 33F/32F; Humidity at start/end = 51%/58%; SQM-L reading at start/end = 20.99/21.02 (reason for excessive brightness unknown)
Date
Source IC1396 with CLS filter
Author s58y

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
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Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by s58y at https://flickr.com/photos/45032885@N04/8535651436. 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
current11:26, 19 December 2021Thumbnail for version as of 11:26, 19 December 20214,752 × 3,168 (4.27 MB)Siloepic (talk | contribs)Transferred from Flickr via #flickr2commons

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