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Been great to have a few nights of clear sky - I captured this last Wednesday/Thursday last week. I have only Just getting to grips with narrow band imaging/processing and I am sticking with tried and tested SHO Hubble palette for now, but very interested in the percentage combinations like the wide field recently posted by @Adreneline - Cave, Bubble and M52 - to name but a few. I'm assuming the colour palette combinations are implemented using PixelMath functions in PI - I will do some reading and jump into the processing threads to find out more I think.
But for now here's my latest SHO narrowband - I left in a hint of green on the inner lighter Ha nebulosity as I like the transition into the Blue of OIII signal
90mins each for Ha, OIII, SII , Optilong filters in 120s subs - 4.5hrs total
Captured using RPi4 /INDI/EKOS
Processed, APP,PI,PS CC
Pixel scale: 6.067 arcsec/pixel
This is Markarian's Chain shot from my back garden over three nights in late March. Probably the deepest single image I've taken in terms of integration time...which leaves me feeling my processing is not quite doing the data justice...maybe I'll come back to it.
In any case, this is an incredible part of space; looking away from our galaxy reveals countless others!
The crazy number of Lum subs took a whole day for APP to chug through and so I've resolved to lower the gain from unity going forwards to get more manageable sub lengths than 15 seconds!
L: 1050 (!) x 15s R: 92 x 60s G: 165 x 30s B 165 x 30s....total integration time 8.2 hours.
Captured using APT, stacked in APP and processed in Pixinsight.
Thanks for looking!
Edit: Link to higher res version
Hi all. This one has really been a major struggle. Between mistakes i made like trying to use a cheapo dual cigarette lighter adapter resulting in my dew heaters failing. My luminance data losing focus, perhaps a cable snagged, not really sure why it happened. Star shapes in the corners are poor mainly i think due to tilt caused by my zwo eos adapter (new geoptic one in the post). And of course one of my neighbors leaving his led moon on all night so i lost 5 hrs of rgb due to pink stars from the led (at least i think that's what caused it). The joys of astro photography. All those trials make it all the sweeter when you manage to pull an image from the data.
Anywho this is 4 hrs of lum 150 second subs at 0 gain with Asi 1600 Samyang 135
3.5 hrs of rgb 150 second subs unity gain Asi 071 Samyang 135
5 hrs Ha 150 second subs at 300 gain Samyang 135
Stacked in Dss, processed in PI and PS.
California Nebula lies approx 1,500 ly from earth in the constellation Perseus. Aptly named due its shape. Most likely illuminated by the bright blue star just above Xi Persei according to various sources online.
Hope you like it.