Tag: astro photography

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NGC 2237 – Rosette Nebula in narrow band

Last night, I captured several subs of the Rosette Nebula (NGC 2237). Most of the subs were in H-alpha. So the O-iii and S-ii data is a bit short in signal. But hopefully, one of the next nights will be clear to add more subs 🙂
The colored image is Ha = red, Oiii = green, Sii = blue. The one in black and white is the pure H-alpha image

Image data:
Date: 2021-03-02
Location: Graz, Austria
Telescope: 102mm f/7 APO with 0.79x flattener (equals to 564mm focal length)
Camera: QHY183C @ -30C
Filters: Baader H-alpha, O-iii, S-ii and IDAS LPS-D2
Guiding: MGEN-II with off-axis guider
Exposures: 20x300s H-alpha, 10x300s O-iii, 5x300s S-ii

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NGC 2359 – Thor’s Helmet in narrow band during Full-Moon

Even though the moon was at its brightest, I had to capture some light during the current phase of perfect weather. So I aimed for a rather dim nebula – Thor’s Helmet. I could capture a total of 124x300s images, which I combined to this nice result…

Image data:
Date: 2021-02-27 – 2021-03-01
Location: Graz, Austria
Telescope: 102mm f/7 APO with 0.79x flattener (equals to 564mm focal length)
Camera: QHY183C @ -30C
Filters: Baader H-alpha, O-iii and IDAS LPS-D2
Guiding: MGEN-II with off-axis guider
Exposures: 67x300s H-alpha, 33x300s O-iii

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Sunspot 12804 plus prominences and filaments

After a brief break early February, the Sun is still showing activity. Here are the nice but small sun spot 12804 as well as 2 filaments and a detatched prominence.

Image data:
Date: 2021-02-26 13:30 – 14:00 UTC
Location: Graz, Austria
Telescope: 102mm f/7 APO with 4x Tele-Centric
Camera: QHY183C @ -10C
Filters: SolarSpectrum 0.5A @ 60.5C

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High-Res Moon

Yesterday evening, during our astronomy club chat, I had my scope active to observe the moon. Fortunately, there have been quite stable air conditions. So I could record several craters, mostly located near the terminator for best shadows in the crater valleys 🙂

Image data:
Date: 2021-02-24 19:00 – 21:30 UTC
Location: Graz, Austria
Telescope: 256mm f/5 Newton with 2.5x Barlow
Camera: QHY462C
Moon: Phase: 32d / 92%
Moon-Diameter: 31m41s
Imaging scale: 0.19″/pixel – 1 pixel = approx. 350m on the surface of Moon
Filters: UV-IR Cut, 850nm IR Pass

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NGC2264 – The Cone Nebula and Christmas Tree Cluster

Here is another result from last weekend of fine weather. This is the Cone Nebula and Christmas Tree Cluster in NGC 2264, a beautiful H-alpha region.
The image is a 2 1/2 hours pure H-alpha recording. Therefore presented in black and white.

Image data:
Date: 2021-02-12 – 2021-02-14
Location: Graz, Austria
Telescope: 102mm f/7 APO with 0.79x flattener (equals to 564mm focal length)
Camera: QHY183C @ -30C
Filters: Narrow band H-alpha filter
Guiding: MGEN-II with off-axis guider
Exposures: 15x600s Ha

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Virgo Galaxies around M86

This is the next image captured last weekend. I recorded 114 individual exposures of 120s, from which I could use 43 due to clouds crossing in the night.
I annotated the image with the galaxies visible. Among them are:
M86 (mag 8.8)
NGC 4438 (mag 10.0)
NGC 4388 (mag 10.9)
NGC 4440 (mag 11.8)
NGC 4402 (mag 11.9)
and the faintest ones visible are
IC 3386 (mag 16.0)
IC 3349 (mag 17.7)
IC 3363 (mag 17.7)
PGC 40723 (mag 17.7)

Image data:
Date: 2021-02-11
Location: Graz, Austria
Telescope: 102mm f/7 APO with 0.79x flattener (equals to 564mm focal length)
Camera: QHY183C @ -30C
Filters: Baader UV-IR Cut + IDAS LPS-D2
Guiding: MGEN-II with off-axis guider
Exposures: 43x100s RGB

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Leo Triplet with H-alpha and O-iii enhanced

During the last few days there were really promising clear nights. I recorded several data sets from my urban location (under these conditions, going up the mountains would have been a treat!). Now, as there are clouds again, I am processing the captured data. Here is the first result from the Leo Triplet (M65, M66 and NGC 3628).
I still have not yet received my color filters. So here I have a combination of luminance (UV-IR-Cut), H-alpha and O-iii data.

Image data:
Date: 2021-02-12 – 2021-02-14
Location: Graz, Austria
Telescope: 102mm f/7 APO with 0.79x flattener (equals to 564mm focal length)
Camera: QHY183M @ -30C
Filters: Baader UV-IR Cut + IDAS LPS-D2, narrow band Ha, Oiii
Guiding: MGEN-II with off-axis guider
Exposures: 41x100s Luminance, 20x300s O-iii (2x binning), 30x300s H-alpha (2x binning)
Sky-Quality: 19.4-19.6 mpss

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Sunspots 12785, 12786, 12788 from 2020-11-29

The prolongued quiet phase of the transition from solar cycle 24 to 25 hasn’t have much to show off. But now, the sun has several sunspots as well as prominences to marvel on!
It is really fascinating, that the sun burst into activity within only a few days.

I was lucky to get a brief period of cloud free late morning to image the sunspots 12785 (the spot to the right), 12786 (the large whale-shaped spot to the right, including the tiny spots left to it) and 12788 (the group of tiny spots to the south-east of 12786) in a 2-tile mosaic.
On the limb, there is quite some activity too! See the 2 parts with prominences here:

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