File:Sunspot 930 from Monrovia (322877156).jpg
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Summary[edit]
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| Description |
Monrovia noon sun seen at 11:30 am PST. There was a little high level haze, which has produced some wispy shadows over the disk. Note the visible sunspot at about 2:30. This is probably the group known as sunspot 930, which is the most visible artifact on the photosphere associated with the solar flare last Tuesday that had people worried about communications satelites and the crew on the ISS today. Compare this to the <a href="http://en.wikipedia.org/wiki/Solar_and_Heliospheric_Observatory" rel="noreferrer nofollow">SOHO</a> <a href="http://sohowww.nascom.nasa.gov/data/realtime/javagif/gifs_small/20061214_1600_mdi_igr.gif" rel="noreferrer nofollow">image</a> taken at close to the same time. Considering that SOHO is in a halo orbit around the Earth-Sun L1 <a href="http://en.wikipedia.org/wiki/Lagrangian_point" rel="noreferrer nofollow">Lagrange point</a> and has an unobstructed view of the disk (not to mention its price tag), this isn't that bad an image for under $200 of accessories on a DSLR. This image was captured with a Thousand Oaks Optical Black Polymer filter on a Phoenix/Samyang 500mm f/8 reflector telephoto mounted on a Nikon D70s. Aiming an under 5 degree field of view at an 0.5 degree object that is the only visible object through the viewfinder is an entertaining process. A trick I figured out on last spring's eclipse hunting trip is to punch one eye out of a pair of cardboard eclipse viewing glasses. The viewfinder's rubber eyecup replaces that lens, and both eyes can be open and used in a natural way while attempting to aim the camera. It does look a little silly... but it saves a lot of painful sunburnt retinas. All the usual warnings apply. Do not try this at home without the right equipment. Looking at the sun can be dangerous. |
| Date | |
| Source | Sunspot 930 from Monrovia |
| Author | RBerteig |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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Licensing[edit]
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- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- 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.
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This image was originally posted to Flickr by RBerteig at https://flickr.com/photos/51035786238@N01/322877156. It was reviewed on 5 December 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 09:40, 5 December 2021 | | 1,004 × 1,004 (341 KB) | A1Cafel (talk | contribs) | Transferred from Flickr via #flickr2commons |
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