File:M7 - Ptolemy's Cluster (48118643106).jpg
![File:M7 - Ptolemy's Cluster (48118643106).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/1/15/M7_-_Ptolemy%27s_Cluster_%2848118643106%29.jpg/800px-M7_-_Ptolemy%27s_Cluster_%2848118643106%29.jpg?20201208095801)
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Summary
[edit]DescriptionM7 - Ptolemy's Cluster (48118643106).jpg |
Messier 7, an open cluster in Scorpius. Named after the Greek-Roman astronomer Ptolemy, who was first to record it in 130 CE. It is the southernmost Messier object with a declination of -34.8, rising to only ~19.7 degrees high at meridian from here in Santa Fe, New Mexico. A very challenging target for my current setup. Tried to get everything tightend down and polar alignment as good as possible, but still ended up throwing out around 84% of my subs. Thankfully this is a bright region of space so the data was workable regardless! Acquisition Info: 14x20" sub exposures 4 min 40s total integration time ISO-1600 f/5.6 135mm focal length (APS-C sensor) Gear Used: NyxTech Nyxtracker V2.0 Canon EOS 350D Canon EF 75-300mm Tripod Software Used: Deep Sky Stacker PixInsight Adobe Photoshop |
Date | |
Source | M7 - Ptolemy's Cluster |
Author | Hypatia Alexandria from Santa Fe |
Licensing
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This image was originally posted to Flickr by HypatiaPhoto at https://flickr.com/photos/160078282@N02/48118643106. It was reviewed on 8 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
8 December 2020
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:58, 8 December 2020 | ![]() | 5,647 × 3,972 (17.76 MB) | Eyes Roger (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Image title | Picture saved with settings embedded. |
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Width | 6,948 px |
Height | 4,628 px |
Bits per component |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 100 dpi |
Vertical resolution | 100 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS5.1 Windows |
File change date and time | 00:59, 24 June 2019 |
Color space | sRGB |
Date and time of digitizing | 18:44, 23 June 2019 |
Date metadata was last modified | 18:59, 23 June 2019 |
Unique ID of original document | xmp.did:B94E219E4D96E911A867A4B73CCAFEF0 |