File:NGC7000 (-2) center (4144732481).jpg
Original file (1,320 × 1,200 pixels, file size: 554 KB, MIME type: image/jpeg)
Captions
Summary
editDescriptionNGC7000 (-2) center (4144732481).jpg |
Subject: NGC7000/IC5067/IC5070 -- North America Nebula and Pelican Nebula Image FOV: 3.666 degrees by 3.333 degrees (220 minutes by 200 minutes) Image Scale: 10 arc-second/pixel Date: 2008/07/25 (H-alpha), 2008/08/02 (RGB) Location: near Halcottsville, NY Exposure: H-alpha E:12 x 10 minutes, H-alpha W: 12 x 10 minutes, RGB E: 6 x 10 minutes, RGB W: 6 x 10 minutes, total exposure = 6h, ISO800, f/4.8 Filter: H-alpha: Baader 7nm, RGB: Astronomik UHC Camera: Hutech-modified Canon 30D Telescope: SV80S 80mm f/6 + TV TRF-2008 0.8X reducer/flattener = 384mm FL, f/4.8 Mount: Astro-Physics AP900 Guiding: ST-402 autoguider and SV66 guidescope. MaximDL autoguiding software using 6-second guide exposures (H-alpha) and 3-second guide exposures (RGB -- bright star in field caused blooming at 6 seconds) Processing: Raw conversion and calibration with ImagesPlus (dark frames, bias frames, and flat frames); Aligning and combining with Registar; Levels, cropping/resizing, JPEG conversion with Photoshop CS. No sharpening or noise reduction. Mosaic created with Registar and Photoshop. Final image channels: Red = max(UHC red, H-alpha red), Green = max(UHC green, 0.33*H-alpha red), Blue = max(UHC blue, 0.25*H-alpha red) Remarks: [H-alpha E]: Temperature at start 55F, SQM-L = 21.42 at start, 21.46 in middle, 20.99 at end (moonrise) [H-alpha W]: Temperature at end = 49F, SQM-L = 20.75 at start (moonrise), 20.36 at end (moon was up) [RGB]: Temperature at end = 50F, SQM-L = 21.37 at start and 21.44 at end |
Date | |
Source | NGC7000 (#2) center |
Author | s58y |
Licensing
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This image was originally posted to Flickr by s58y at https://flickr.com/photos/45032885@N04/4144732481. 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
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:38, 19 December 2021 | 1,320 × 1,200 (554 KB) | Siloepic (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Orientation | Normal |
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Horizontal resolution | 100 dpi |
Vertical resolution | 100 dpi |
Software used | Adobe Photoshop CS Windows |
File change date and time | 22:58, 23 September 2008 |
Color space | Uncalibrated |
Image width | 1,320 px |
Image height | 1,200 px |
Date and time of digitizing | 17:58, 23 September 2008 |
Date metadata was last modified | 17:58, 23 September 2008 |
IIM version | 2 |