This morning between 15:30 and 16:00 UTC I imaged in 393.3nm K-Line and 540nm Continuum. The skies were partly cloudy with fair/average seeing and the temperature was 78F ( 25.5C ). I used the AT72EDII stopped down to 40mm for K-Line and the Orion70 glass filtered refractor at full aperture for Baader 540nm continuum. Both were mounted on my Losmandy AZ8 mount. The AT72EDII used the Antlia 393.3nm 3nm bp wedge/filter for K-Line and I used the Baader 540nm 10nm bp filter for " continuum ". The camera was my ZWO ASI178MM running on an old Windows 8.1 laptop. Image acquisition was done using SharpCap and stacking was done using AVIStack. Ps CC2020 was used as the post processor.
Imaging!.JPG (10.69 KiB) Viewed 1550 times
Carpe Lumen!!
James
P.S. I included the SDOAIA1600 as a comparison to my 393.3nm images.
SDOAIA1600_2K_5-21-24.jpg (655.58 KiB) Viewed 1550 times
15_37_27Z_AT72EDII_393.3nm_5-21-24_JP.jpg (499.01 KiB) Viewed 1550 times
15_39_12Z_AT72EDII_40mmMask_Color_5-21-24_JP.jpg (496.77 KiB) Viewed 1550 times
15_50_18Z_Orion70_540nm_5-21-24_JP.jpg (1 MiB) Viewed 1550 times
Imaging in the green month of May!.JPG (805.16 KiB) Viewed 1550 times
Last edited by DeepSolar64 on Wed May 22, 2024 12:06 pm, edited 1 time in total.
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
These came out well James, love your observing spot!
http://brierleyhillsolar.blogspot.co.uk/ Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
John,
It may be wide-band CaK but I can trace out the faculae/plage as seen in narrow band CaK and in the SDO 160nm images. The contrast is just lower because of the photospheric light washing out the calcium. With the narrower filters one gets less or little photosphere and hence more calcium chromosphere which of course shows up with better contrast since it is not being drowned out by sideband light. I really like the Alluxa filters that Christian, Alfred and Mark use. They are tunable and perform superbly. The SDO is at a MUCH shorter wavelength but sees the same features.
Petr,
Thanks! Have you ever thought about doing CaK, Gband or Continuum?
James
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
