今天早上拍到的太陽黑子

(請注意，照太陽的照片隻能在太陽剛升起於地平線或快落山的時候照，千萬別在其它時間照。那時的太陽可以讓你永遠失明）。

今天早上，看到升起的太陽，照了幾張照片，發現sun spots:

相機是Nikon Coolpix A900 at 35x

On 3/15/2009, I had an entry on sun spots:

https://blog.wenxuecity.com/myblog/40376/200903/24486.html 

什麽是太陽黑子:

https://en.wikipedia.org/wiki/Sunspot

Sunspots are phenomena on the Sun's photosphere that appear as temporary spots that are darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic flux that inhibit convection. Sunspots appear within active regions, usually in pairs of opposite magnetic polarity.^[2] Their number varies according to the approximately 11-year solar cycle.

Individual sunspots or groups of sunspots may last anywhere from a few days to a few months, but eventually decay. Sunspots expand and contract as they move across the surface of the Sun, with diameters ranging from 16 km (10 mi)^[3] to 160,000 km (100,000 mi).^[4] Larger sunspots can be visible from Earth without the aid of a telescope.^[5] They may travel at relative speeds, or proper motions, of a few hundred meters per second when they first emerge.

Indicating intense magnetic activity, sunspots accompany other active region phenomena such as coronal loops, prominences, and reconnection events. Most solar flares and coronal mass ejections originate in these magnetically active regions around visible sunspot groupings. Similar phenomena indirectly observed on stars other than the Sun are commonly called starspots, and both light and dark spots have been measured.^[6]

前幾天微信上報道太陽黑子on 6/28/2023:

https://www.google.com/search?q=recent+sun+spot+activity&rlz=1C1IHCB_enUS722US729&oq=recent+sun+spot&aqs=chrome.0.0i512j69i57j0i512j0i22i30l7.10471j1j7&sourceid=chrome&ie=UTF-8

Last 24 hours: Sun activity is back to low levels. Only C flares were produced in the past day (11 UTC yesterday and 11 UTC today). There were a total of 14 C flares during the period. The largest was a C5.5 flare from sunspot AR3354 at 18:39 UTC on June 28, 2023.2 days ago

謝謝觀看。

 

所有跟帖： 

• 哇，照得好清楚！你這個相機照過月亮嗎？效果如何？ -日月茗- ♀ (0 bytes) () 06/30/2023 postreply 04:57:00

• 我沒有用這個相機照過月亮，我用過Nikon D70和sigma 50-500mm j鏡頭照過，我找到相片後貼上。我哪天照 -xia23- ♂ (443 bytes) () 06/30/2023 postreply 05:23:32

• 月食 （9/26/2007）taken by Nikon D70 & Sigma 50-500 mm lens -xia23- ♂ (81 bytes) () 06/30/2023 postreply 05:40:32

• moon (12/10/2006), Nikon D70, Sigma 50-500 mm lens -xia23- ♂ (81 bytes) () 06/30/2023 postreply 05:48:59

• 很棒！你這照太陽黑子的，難道沒用三腳架？ -日月茗- ♀ (0 bytes) () 06/30/2023 postreply 06:24:21

• 第三張（時間最早）沒有用，但我的身體背倚著牆。第一二張用了。我以後幾天再試試。 -xia23- ♂ (493 bytes) () 06/30/2023 postreply 07:37:05

• 瓦。150mm傻瓜機還能照出黑子，厲害。用什麽filter？ -位酷哥- ♂ (0 bytes) () 06/30/2023 postreply 06:09:08

• 沒用。150 mm 的傻瓜相當於840 mm的 35 mm相機的鏡頭，見內： -xia23- ♂ (315 bytes) () 06/30/2023 postreply 07:43:52

• 厲害了. -青柏- ♀ (0 bytes) () 06/30/2023 postreply 08:31:16

• 不厲害，傻瓜機照的，加個三角架，誰都能照。請一定注意：隻能在太陽剛升起後一會兒和落山前一會兒照，其它時間會使人失明。 -xia23- ♂ (0 bytes) () 06/30/2023 postreply 10:01:00

• 牛人 -Duckmaster- ♂ (0 bytes) () 06/30/2023 postreply 09:14:55

• 不是牛人，傻瓜機照的，加個三角架，誰都能照。請一定注意：隻能在太陽剛升起後一會兒和落山前一會兒照，其它時間會使人失明。 -xia23- ♂ (0 bytes) () 06/30/2023 postreply 10:03:23

• 現在的傻瓜機居然能有這樣的效果，真不錯 -杏梨桃李- ♀ (0 bytes) () 06/30/2023 postreply 10:19:00

• 還有更好的傻瓜機, 比我的貴很多, 24-3000mm lens -xia23- ♂ (3596 bytes) () 06/30/2023 postreply 11:24:39

• 好厲害 -每天砍樹- ♀ (0 bytes) () 06/30/2023 postreply 13:02:47

• 不厲害，傻瓜機照的，加個三角架，誰都能照。請一定注意：隻能在太陽剛升起後一會兒和落山前一會兒照，其它時間會使人失明。 - -xia23- ♂ (0 bytes) () 06/30/2023 postreply 15:23:11

• 謝謝大家。 -xia23- ♂ (0 bytes) () 06/30/2023 postreply 15:26:11