M106 multi narrowband

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Menno555
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M106 multi narrowband

Post by Menno555 »

My M106 project is finished. Not as planned, shooting broadband only gave way to orange/brown.
So it has become a multi narrowband capture: Optolong L-Pro (Ha, Hb, OIII, NII and SII) and L-eNhance filter (Ha, Hb, and OIII). In total 15 and a half hours of data.
And it's clear that the best filter, is dark skies :)

Below a cropped only of the core of M106 with the L-eNhance. Below that, the complete but scaled down to 2400px complete version.
This one can be viewed here: https://i.ibb.co/8KZXPCM/M106-in-multi-narrowband.jpg

Bortle 7/8
Meade LX200 8" f/10 ACF OTA
Ioptron CEM25EC mount (no guiding)
Optolong L-Pro filter
Optolong L-eNhance filter
Zwo ASI071MC Pro camera

Captured with SharpCap Pro @ -10 Celsius
Optolong L-Pro: 83 x 240 sec / Gain 10 / Offset 10 / White balance R50 B50
Optolong L-Pro: 31 x 300 sec / Gain 200 / Offset 28 / White balance R50 B50
Optonlong L-eNhance: 51 x 535 sec / Gain 175 / Offset 20 / White balance R50 B50

Stacked the 3 sets with DeepSkyStacker

Processed with Siril and Photoshop
Siril: each stack separately with Background Extraction and Histogram, saved as TIF
Photoshop: layered the 3 images with 50% opacity, Camera Raw Filter (blacks, saturation, clarity, noise reduction), scaled down to 2400px.

L-eNhance
L-eNhance
M106_enhance.jpg (635.5 KiB) Viewed 290 times
Complete multi narrowband
Complete multi narrowband
M106_Narrowsm.jpg (178.82 KiB) Viewed 290 times
timh
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Joined: Mon Aug 26, 2019 5:50 pm

Re: M106 multi narrowband

Post by timh »

Hi Menno,
Although it's not conventional to use the filters on galaxies I'd say that it's given you quite a nice contrasty result on the central region of this particular galaxy probably particularly because of the HA feature? M82 may be another to go for with your set up in a similar way and for the same reason?
TimH
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Menno555
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Re: M106 multi narrowband

Post by Menno555 »

What I have read is that the core of M106 is really active with a supermassive blackhole. My guess is that there are enough lines emanating from the core over the whole spectrum to capture.
And yes, M82 is on my to-do list, as is M101 and M33 (both have some nice narrowband structures in them).

Menno
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Menno555
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Re: M106 multi narrowband

Post by Menno555 »

timh wrote: Tue Apr 20, 2021 7:03 pm Hi Menno,
Although it's not conventional to use the filters on galaxies I'd say that it's given you quite a nice contrasty result on the central region of this particular galaxy probably particularly because of the HA feature? M82 may be another to go for with your set up in a similar way and for the same reason?
TimH
Started with M82 :)
This is 4 hours of data and now pushed the unguided mount to 600 second exposures :D
This is with the Optolong L-eNhance. Planning for at least 10 hours of this and then also a set of broadband and mix that.
M82_4hours_eNhance.jpg
M82_4hours_eNhance.jpg (763.12 KiB) Viewed 169 times
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turfpit
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Re: M106 multi narrowband

Post by turfpit »

Some good detail in that image.

Dave
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