File:NGC7000 and IC1318 Mosaic with CLS filter (8565261695).jpg

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Original file ‎(3,837 × 3,616 pixels, file size: 5.17 MB, MIME type: image/jpeg)

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Description

Subject: NGC7000, IC1318, NGC6888, etc.

Image Size: 2 panels = 2 x 3168 x 2112 (with overlap) -- reduced to 67% size

Image FOV: 18 degrees by 17 degrees (approx) Image Scale: 17 arc-second/pixel (reduced to 67% size)

Date: 2011/07/01 and 2012/09/19

Exposure: IC1318: 20 x 10m = 3 hours 20 minutes, ISO 1600, f/2.8. NGC7000: 24 x 5m = 2 hours ISO 1600, f2.8. Total exposure = 5hours 20m

Filter: Astronomik CLS Camera: Hutech-modified Canon T1i/500D Lens: Contax/Yashica (Carl Zeiss) 85mm f/2.8 Mount: Astro-Physics AP900

Guiding: ST-402 autoguider through TV-102iis guidescope, Maxim DL autoguiding software with 6-second guide 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. Two panels combined into a mosaic using AutoPano Pro 2 (Mercator projection, SmartBlend). The mosaic was reduced to 2/3 size and then converted to 8-bit mode and JPEG, etc. with Photoshop.

Remarks: 2011/07/01 (IC1318): Temperature start/end = 50F/49F; Humidity start/end 72%/68%; SQM-L reading start/end = 21.37/20.99 (sunrise?) 2012/09/19 (NGC7000): Temperature at start = 46F; Humidity at start = 71%; SQM-L reading at start = 21.37

This is just the combination of two earlier images already uploaded, one from 2011 and one from 2012.
Date
Source NGC7000 and IC1318 Mosaic with CLS filter
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@N04/8565261695. 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 20213,837 × 3,616 (5.17 MB)Siloepic (talk | contribs)Transferred from Flickr via #flickr2commons

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