Kitsunegari

here are a a couple image from the dutch open telescope, which uses adaptive optics on their calcium system. here is a video of the same feature https://webspace.science.uu.nl/~rutte101/dot/albums/movies/2006-04-24-NW-ca.avi

follow through to this thread,

I am not exactly sure how to explain what happened here, but imppg just did some sort of magic trick. 127mm x 1200mm telescope with a 2x meade telenegative , and a 2.5x televue powermate stacked on top of it (something like 4.5x) So here is the raw capture, looks like garbage. But something magical happened when I started experimenting with imppg. second pass third pass fourth pass fifth pass sixth pass seventh pass Is this for real!? Because this is some insane magic here. For your reference, please follow this link to another user operating an 11" telescope for calcium imaging and you can see that there is some sort of voodoo here. http://solarchatforum.com/viewtopic.php?f=4&t=26801 http://solarchatforum.com/viewtopic.php?f=4&t=26460 <---- this image in particular! and here http://solarchatforum.com/viewtopic.php?f=4&t=26178 and here is one more http://solarchatforum.com/viewtopic.php?f=4&t=25591

My imppg xml file used for the imx287 and 127mm x 1200mm scope. calcium alluxa sony imx287.xml

100 frames. I got the limb spicules to resolve great. Camera used : basler 720x520um - Sony imx287 chip (450-500 frames per second), https://www.baslerweb.com/en/products/cameras/area-scan-cameras/ace/aca720-520um/ telescope used : explore scientific 127mm x 1200mm firstlight https://explorescientificusa.com/products/fl-ar1271200maz01 ERF used : 36mm baader planetarium b-ccd + 48mm QB29 https://www.baader-planetarium.com/en/baader-b-ccd-filter-(blue).html + https://www.ebay.com/itm/2PCS-QB29-blue-optical-filter-380nm-bandpass-filter-Dia-25mm-thick-2mm-AW42-LW-/173745410370 Calcium filter used : prototype 25.4mm Apollo Lasky/Amplelight 1-angstrom (0.1nm) 393.37nm . 5500 frames captured x 10% stack - place holder preview.

So again, concluding that 10 second cadence is way too long for a calcium k-line time lapse. You can see the surface pattern resemble CRT antenna television white noise. The dark set of "splotching noise" are actually spicules which are similar to those seen in h-alpha off band. I suspect that with my high speed camera set at 1 to 3 second intervals, this will smoothen out quite a bit . A wonderful harmony would be present and this would be more pleasant to watch ; like tall wheat fields in a breeze. So i will attempt that next at 700 frames per-second with my next opportunity. And to those who may find this a bit suspect, i can assure what you see is not camera noise.

interesting instantaneous feature look at the red arrow in top left. LEarning to process a calcium animation is interesting. 10 second cadence is clearly way too long. The surface changes so rapidly i think 1 second between captures is proper.

and some color for coolness.

explore scientific first light 127 x 1200 with baader planetarium B-ccd filter + QB29 glass for eneergy rejection in the focuser. a Generation 3 . Hard coated ; 1 angstrom 393.37nm filter developed by Apollo Lasky (these are supposed to be available for purchase at http://calcium.solar but i am not sure when.) Basler 1920-155um camera for imaging. And here is an interesting reference image from paris meudon observatory. this is a diffraction grating slit image, with .1 angstrom bandwidth.

bump

I had planned on a full disc but the clouds came and ruined the party about 2 minutes after i hit record ; they did not give me enough sucker holes to grab anymore captures. This was all i could harvest , there was a nice filament group and I wish I had started with that first. Over all I am satisfied and I think my second chance will turn out better.

And i will try again.

these programs are great, but they do all have various limitations. For example if your video is not stable from a mount that has a stripped gear. All these stacking procedures rely soley on the mount being entirely stationary, or at the very least 95% stationary. Any deviation in the image from the next video will throw back an error in autostakkert because the image anchor does not automatically readjust itself to correct for image drift. i have found that PIPP offers the greatest compensation for non-stationary video captures and eliminating frames before stacking into registax or autostakkert. i find that a finalized manual alignment in registax for animation is nearly 99% accurate, where imppg fails to acquire the limb or surface feature. But imppg indeed does a good job most of the time. (i do still get errors sometimes ) One thing i would love to see in an autostakkert or imppg update is the ability to add false color profiles in batch. This takes quite a bit of time in gimp as i have to apply it to each frame individually and resave it.

a little bit of both. I always have to experiment with different settings because i am constantly changing my setups. Eventually i find something that works well and save those settings. I am constantly switching out filters and optics.

I think this is somewhere in the ballpark of 10 meters. Process it if you would like! This is the filaprom. Very difficult to image at this scale on a 150mm scope. I dont know how some of you guys doit! raw.tif

This is a coronado pst etalon, utilizing a new product supplied by Apollo Lasky. The filter in question is a 1 angstrom blocking filter. Typical blocking filters are 8 angstroms and the difference is visible on the limb of the sun. I made a cool comparison of the dramatic "limb elimination" affect this has, Notice the well defined secondary circle on the limb in the coronado filter image: This nearly nonexistant in the 1 angstrom filter. The resulting reduction in bandwidth has a massive impact on the solar appearance, and makes it look rather cotton like. This is a well known phenomena while utilizing a double stacked etalon, however this is the first time this presentation is confirmed by blocking filter upgrades.

very nice

and another one before im off to work. These are all stacked with auto stakkert. So they have a few formation errors, but you get the idea here. I am very happy with this 1 angstrom blocking filter.!

here is a shot of the swwet spot on my pst etalon when used in "Standard pstmod" arrangement. i dont like hiding imperfections, Pst mod arrangements are far from perfect!

have fun ds a1 raw.tif

So here is a retake using Regstax, the details that were destroyed with autostakkert have been preserved; but the newton rings are still prominent. I think the autostakkert detail around the active region looks more presentable however, so there is clearly some discrepancy here on how data is handled between the two apps. Guess i have some sleuthing to do on this because i have a great setup dying to be remedied.