May 15 H alpha and May 10 CaK
Posted: Wed May 15, 2019 5:23 pm
Hi Everyone.
I should have paid more attention to the weather forecast. The day began with beautiful clear skies (not a cloud in sight) so I began the process of gearing up for an imaging session. I set up the C8 scope and, as the Daystar came to temperature and the Sun cleared the neighbour's tree, started to focus and prepare for recording. I noticed the exposure settings had to be continually nudged up and, removing my head from the shroud (cardboard box), discovered a huge bank of high cirrus rolling in. I quickly managed two videos of AR12741 before the cloud cover became too dense and here is the result. I have to admit, it's not bad considering the haze I had to shoot through. All in all, it was a morning session consisting mostly of setting up, then two quick videos and then taking down!
Equipment: Aries ERF, Celestron C8 Edge, Moonlite CHL focuser, ~f/46 Telecentric, Daystar QPE 0.6A, ~ f/35 FR, PGR USB3 Grasshopper IMX174.
Here is a CaK panorama of ARs 12741/12740 from May 10. I had taken a number of H alpha videos with the C8 then switched to the Stellarvue refractor for the CaK. By this time the seeing was seriously degrading but I shot a number of videos anyway. The big difficulty with the resulting images was stitching them together for a 3-pane mosaic. Both Autostitch and Photomerge balked at the assignment but, ultimately, I managed some success with stitching 2/3 panes in Photomerge and compositing the remaining one by hand.
Equipment: Stellarvue 115mm f7. Chroma 380/ IDAS UV-IR cut, Omega CaK 0.2nm, Lunt CaK B1800 Etalon. (Sys.~f37) PGR USB3 Grasshopper IMX174.
Cheers.
Peter
I should have paid more attention to the weather forecast. The day began with beautiful clear skies (not a cloud in sight) so I began the process of gearing up for an imaging session. I set up the C8 scope and, as the Daystar came to temperature and the Sun cleared the neighbour's tree, started to focus and prepare for recording. I noticed the exposure settings had to be continually nudged up and, removing my head from the shroud (cardboard box), discovered a huge bank of high cirrus rolling in. I quickly managed two videos of AR12741 before the cloud cover became too dense and here is the result. I have to admit, it's not bad considering the haze I had to shoot through. All in all, it was a morning session consisting mostly of setting up, then two quick videos and then taking down!
Equipment: Aries ERF, Celestron C8 Edge, Moonlite CHL focuser, ~f/46 Telecentric, Daystar QPE 0.6A, ~ f/35 FR, PGR USB3 Grasshopper IMX174.
- fc2_save_2019-05-15-083706-0000_pipp42686_AS100_5x5ARL200_shrp_ImP-crvs_AsI-strtch_proc2_crop_proc.png (1.46 MiB) Viewed 2323 times
- fc2_save_2019-05-15-083706-0000_pipp42686_AS100_5x5ARL200_shrp_ImP-crvs_AsI-strtch_proc2_crop_proc_inv.png (1.35 MiB) Viewed 2312 times
Here is a CaK panorama of ARs 12741/12740 from May 10. I had taken a number of H alpha videos with the C8 then switched to the Stellarvue refractor for the CaK. By this time the seeing was seriously degrading but I shot a number of videos anyway. The big difficulty with the resulting images was stitching them together for a 3-pane mosaic. Both Autostitch and Photomerge balked at the assignment but, ultimately, I managed some success with stitching 2/3 panes in Photomerge and compositing the remaining one by hand.
Equipment: Stellarvue 115mm f7. Chroma 380/ IDAS UV-IR cut, Omega CaK 0.2nm, Lunt CaK B1800 Etalon. (Sys.~f37) PGR USB3 Grasshopper IMX174.
- 2019-05-10 104538-104829 Panorama1_shrp_crvs_proc1_crop.png (5.15 MiB) Viewed 2400 times
Peter
