2018 April 19 Sun - prominences on W limb
Prominences show up on the NWW, W, SWW and SSW limb.
These images are very faint prominence on the W limb .
As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task becomes very tedious when working on close-up imaging, and I have to use very short exposures (thus high gain) to avoid blur images.
Telescope: AP Starfire EDT 155 mm f/9.
stopped to 80 mm (f/17.5) 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), binned 2
North is up, east is to the left.
2018 April 19 Sun - prominences on W limb
2018 April 19 Sun - prominences on W limb
- 附加檔案
-
- prominence-06_22_13Z.jpg (62.93 KiB) 已瀏覽 260 次
-
- prom-W-06_46_11Z.jpg (101.66 KiB) 已瀏覽 260 次
-
- prom-W-06_46_34Z.jpg (174.74 KiB) 已瀏覽 260 次
-
- prom-W-07_00_10Z.jpg (112.39 KiB) 已瀏覽 260 次
-
- prom-W-07_03_02Z.jpg (87.72 KiB) 已瀏覽 260 次
-
- prom-W-07_03_29Z.jpg (71.57 KiB) 已瀏覽 260 次
-
- prom-W-07_04_35Z.jpg (104.82 KiB) 已瀏覽 260 次
-
- prom-W-07_04_46Z.jpg (88.7 KiB) 已瀏覽 260 次
-
- prom-W-07_13_18Z.jpg (90.69 KiB) 已瀏覽 260 次
-
- prom-W-07_13_48Z.jpg (94.94 KiB) 已瀏覽 260 次
Re: 2018 April 19 Sun - prominences on W limb
more images
- 附加檔案
-
- prom-W-07_34_38Z.jpg (105.96 KiB) 已瀏覽 259 次
-
- prom-W-07_40_27Z.jpg (88.16 KiB) 已瀏覽 259 次
-
- prom-W-07_41_06Z.jpg (88.62 KiB) 已瀏覽 259 次
-
- prom-W-07_43_10Z.jpg (97.98 KiB) 已瀏覽 259 次
誰在線上
正在瀏覽這個版面的使用者:沒有註冊會員 和 38 位訪客