2018 February 12 Sun - AR12699 & prominence
Since the tilt by using a single washer does not produce enough tilt angle, I am using the same tilted setup as yesterday, thus all the fringes remain the same. I cannot just add more washers as the locking screw is not long enough, and I don't have 1/8-inch bolts on hand (we only have stock of mm bolts & nuts). A new tilt mechanism is being made but it takes time. Hopefully this jig can be made tomorrow.
AR12699 remains very active, with a strong flare at around 03:00 - 03:10 UTC.
On the solar limb, 2 faint prominences show up on the SWW limb, with another on the NNE limb.
Telescope: AP Starfire EDT 155 mm f/9.
stopped to 50 mm (f/28) for disc images, with 4X telecentric lens (f/36) for closeups
filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: ASI1600MM, 4656X3520 pixels (3.8 micron)
North is up, east is to the left.
2018 February 12 Sun - AR12699 & prominence
2018 February 12 Sun - AR12699 & prominence
- 附加檔案
-
- Sun-white-02_07_14Z.gif (859.71 KiB) 已瀏覽 284 次
-
- AR12699-03_28_30Z_cr.gif (184.07 KiB) 已瀏覽 284 次
-
- Sun_0031 02_22_13Z.gif (762.31 KiB) 已瀏覽 284 次
-
- Sun_0048 02_24_16Z.gif (782.46 KiB) 已瀏覽 284 次
-
- AR12699-02_44_28Z.gif (991.46 KiB) 已瀏覽 284 次
-
- AR12699-02_45_04Z.gif (886.93 KiB) 已瀏覽 284 次
-
- AR12699-02_55_35Z.gif (1.17 MiB) 已瀏覽 284 次
-
- AR12699-03_04_46Z.gif (1.08 MiB) 已瀏覽 284 次
-
- AR12699-03_05_41Z.gif (1.07 MiB) 已瀏覽 284 次
-
- AR12699-03_09_13Z.gif (1.14 MiB) 已瀏覽 284 次
最後由 PTS 於 週一 12 2月, 2018 23:16 編輯,總共編輯了 1 次。
Re: 2018 February 12 Sun - AR12699 & prominence
more images
- 附加檔案
-
- AR12699-03_12_38Z.gif (1.12 MiB) 已瀏覽 283 次
-
- AR12699-03_18_43Z.gif (1007.68 KiB) 已瀏覽 283 次
-
- prom-02_23_31Z.gif (315.03 KiB) 已瀏覽 283 次
-
- prom-02_25_25Z.gif (376.58 KiB) 已瀏覽 283 次
-
- prom-NNE-02_51_55Z.gif (379.96 KiB) 已瀏覽 283 次
-
- prom-SWW-02_49_59Z.gif (464.61 KiB) 已瀏覽 283 次
-
- prom-SWW-02_50_14Z.gif (455.28 KiB) 已瀏覽 283 次
-
- prom-SWW-03_04_06Z.gif (414.29 KiB) 已瀏覽 283 次
誰在線上
正在瀏覽這個版面的使用者:沒有註冊會員 和 18 位訪客