Explore scientific coma corrector

Comet C/2017 T2 PANSTARRS

January 6, 2022 JakubK

Solar system

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I missed the most prominent comet C/2021 A1 (Leonard) in 2021 due to permanent, constant, ever-lasting bad weather. In the last 3 months, I was able to see the star only through the holes in the clouds (except one night during our winter vacation in Laax). At least I have time to process the old data I took a long time ago. In 2020 I took pictures of two comets and here is one of them. It’s called C/2017 T2 (PANSTARRS) and on the 25th of May 2020 was possible to spot it, roaming in the constellation Ursa Major.

I was postponing the processing very long time because the comets are the most difficult object to process. There is a fixed background of the stars and deep space objects and the comet is slightly moving across the field. This means that the pictures must be registered twice and merged together afterward. Since I have plenty of time now, I was able to experiment, and here is the final image:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	no
Exposure	34x180s, Gain 94, bin 1x1,
Date	2020-05-25

M5 Globular Cluster

May 21, 2020 JakubK

Globular cluster

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Cluster DSO Explore scientific coma corrector Gemini gf53 Globular cluster M5 Messier5 Newton 254/1000 OAG Serpens ZWO ASI071MC Pro

Messier 5 is a globular cluster located in the constellation Serpens. I revisited this cluster after four years. Such a spectacular deep space object simply deserves more attention, than I was able to spend four years ago. At that time I used the same telescope but now I have a different coma corrector and camera. Moreover, this time I dedicated significantly longer integration time, specifically I was collecting the photons 2.7 hours, which were traveling to us 24 500 years.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	No
Exposure	54x180s, Gain 95, bin 1x1,
Date	2020-05-21

M98 M99 Galaxies

March 24, 2020 JakubK

Galaxy

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Astronomik L-1 UV IR Block Filter Avalon M-Zero Coma Berenices Explore scientific coma corrector Galaxies M98 M99 Messier98 Messier99 NGC4208 Virgo cluster ZWO ASI071MC Pro

Messier 98 (left bottom) and 99 (right) are galaxies visually located in constellation Come Berenices. These galaxies interacted with each other long time ago, but it’s long time forgotten, because currently, the distance between them is 1.3 million light years.

Technical details:

Telescope	Newton 150/600 mm
Aperture	150 mm
Focal length	630 mm
Mount	Avalon M-Zero
Autoguiding	ZWO 174MM, Guidescope 30 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	140x180s, Gain 94, bin 1x1,
Date	2020-03-24

M44 Beehive Cluster

March 22, 2020 JakubK

Open cluster

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Astronomik L-1 UV IR Block Filter Avalon M-Zero Beehive cluster Cancer Cluster Explore scientific coma corrector M44 Messier44 Newton 150/600 Open cluster ZWO ASI071MC Pro

Messier 44, sometimes called Beehive cluster, is visually one of the biggest open cluster, which can be observed from northern hemisphere. Previous picture, taken 3 year ago, was done with focal length 1000 mm. Now I changed the strategy and used only 630 mm. I think this was a good idea and whole cluster is perfectly framed.

Technical details:

Telescope	Newton 150/600 mm
Aperture	150 mm
Focal length	630 mm
Mount	Avalon M-Zero
Autoguiding	ZWO 174MM, Guidescope 30 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	76x180s, Gain 94, bin 1x1,
Date	2020-03-46

M95 M96 M105 NGC 3384 and NGC 3389 Galaxies

March 18, 2020 JakubK

Galaxy

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Astronomik L-1 UV IR Block Filter Avalon M-Zero Explore scientific coma corrector Galaxies Leo M105 M95 M96 Newton 150/600 NGC3384 NGC3389 ZWO ASI071MC Pro

Well, the weather was so bad very long time or the Moon was up and shining. I had almost no opportunity to capture something this year. Finally the sky cleared up and galactic season started (the spring). I was so excited that I wanted to capture as many deep space object at possible. Therefore I took the telescope with the shortest focal length I have (630 mm), pointed the telescope into the constellation Leo and captured 5 bright galaxies in one shot. M95 is the one at bottom left, M96 in middle and M105 the brightest at top right corner.

Technical details:

Telescope	Newton 150/600 mm
Aperture	150 mm
Focal length	630 mm
Mount	Avalon M-Zero
Autoguiding	ZWO 174MM, Guidescope 30 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	76x180s, Gain 94, bin 1x1,
Date	2020-03-18

M48 Open Cluster

March 18, 2020 JakubK

Open cluster

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Astronomik L-1 UV IR Block Filter Avalon M-Zero Cluster Explore scientific coma corrector M48 Messier48 Monoceros Newton 150/600 Open cluster ZWO ASI071MC Pro

Telescope is out after long time. My main targets for this night are some galaxies in constellation Leo, but I have to wait for these galaxies to cross the meridian (line splitting west and east). By browsing in planetarium software I found one object, which can fill the gap – it was the open cluster M48. Open cluster usually don’t need super dark skies, therefore I can capture them during the evening, when there is still strong light pollution. My previous picture was taken by much longer focal length, therefore the cluster covered nearly whole field of view. This time the background if filled by many stars, which are not members of this cluster.

Technical details:

Telescope	Newton 150/600 mm
Aperture	150 mm
Focal length	630 mm
Mount	Avalon M-Zero
Autoguiding	ZWO 174MM, Guidescope 30 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	76x180s, Gain 94, bin 1x1,
Date	2020-03-18

Double Cluster NGC869 and NGC884

September 3, 2019 JakubK

Open cluster

3 Comments

Avalon M-Zero Cassiopeia Clusters Double cluster Explore scientific coma corrector Greece Karpathos Newton 150/600 NGC869 NGC884 Open cluster Perseus ZWO ASI071MC Pro

Two clusters visually close to each other can be located between constellations Perseus and Cassiopeia. The clusters are relatively young (12 million years) and they are 2700 light-years far from Earth.

The picture was captured during my travel to Karpathos where I had only single wind free night.

I know, the composition should be turned by 90°. I just simply forgot to twist the camera.

Technical details:

Telescope	Newton 150/600 mm
Aperture	150 mm
Focal length	630 mm
Mount	Avalon M-Zero
Autoguiding	ZWO 174MM, Guidescope 30 mm
Camera	ZWO 071 Pro @-5°C
Corrector	Explore Scientific HR
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	28x180s, Gain 94, bin 1x1,
Date	2019-09-03

NGC7023 Iris nebula

September 3, 2019 JakubK

Dark Nebula Reflection nebula

1 Comment

Astronomik L-1 UV IR Block Filter Avalon M-Zero Cepheus Dark nebula DSO Explore scientific coma corrector Iris nebula Karpathos Nebula Newton 150/600 NGC7023 Reflection nebula

Iris nebula, known as NGC 7023, is a reflection/dark nebula located in constellation Cepheus. It’s 1300 light years far from the Solar system and it has 6 light years in diameter. In the middle of the nebula rules so called baby star, which is only few thousand years old. The star was created partially from the gas which is now illuminated.

The picture was taken under dark skies of Greek island Karpathos during my 2019 expedition. Unfortunately, the weather was very bad. There wasn’t a single cloud on the sky, but it was extremely windy, therefore I got only one single steady night and this night I wanted to capture also other deep space objects. Therefore the picture is a stack of only 37 pictures, each 2 minutes long.

Technical details:

Telescope	Newton 150/600 mm
Aperture	150 mm
Focal length	630 mm
Mount	Avalon M-Zero
Autoguiding	ZWO 174MM, Guidescope 30 mm
Camera	ZWO 071 Pro @-5°C
Corrector	Explore Scientific HR
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	37x120s, Gain 94, bin 1x1,
Date	2019-09-03

M72 Globular Cluster in Aquarius

August 9, 2019 JakubK

Globular cluster

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Aquarius Astronomik L-1 UV IR Block Filter Cluster DSO Explore scientific coma corrector Gemini gf53 Globular cluster M72 Messier72 Newton 254/1000 ZWO ASI071MC Pro

Messier 72 is a globular cluster, which can be located in constellation Aquarius. The cluster is approximately 55 light-years from us, which makes it one of the distant objects from Messier catalogue. M72 is very special deep space object for me, because it’s the last object of Messier catalogue captured by me. Now I am thinking, shall I continue and try to capture NGC catalogue? Or shall I move to southern hemisphere? I am definitely sure that some of the Messier’s objects need to be recaptured.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	60x180s, Gain 94, bin 1x1,
Date	2019-08-09

M13 Great Globular Cluster in Hercules

June 7, 2019 JakubK

Globular cluster

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Astronomik L-1 UV IR Block Filter Cluster Explore scientific coma corrector Gemini gf53 Globular cluster Great Globular Cluster in Hercules Hercules M13 Messier13 Newton 254/1000 NGC6209 ZWO ASI071MC Pro

In my opinion, Messier 13 is the most beautiful globular cluster in our galaxy. Last time when I photographed this cluster, I used focal reducer (don’t ask me why), therefore I decided to recapture it with focal length 1060 mm. Small galaxy in upper right corner is called NGC 6209.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	55x180s, Gain 94, bin 1x1,
Date	2019-06-07

M10 Globular Cluster

June 2, 2019 JakubK

Globular cluster

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Astronomik L-1 UV IR Block Filter Cluster DSO Explore scientific coma corrector Gemini gf53 Globular cluster M10 Messier10 Newton 254/1000 Ophiuchus ZWO ASI071MC Pro

Messier 10 is a globular cluster located in constellation Ophiuchus. This cluster belongs to one of the closest to the Earth – the distance is “only” 14 300 light-years. It has visually many globular neighbors: M12 northwest, M14 east and M107 southwest.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	38x180s, Gain 94, bin 1x1,
Date	2019-06-02

M12 Globular Cluster

June 1, 2019 JakubK

Globular cluster

0 Comment

Astronomik L-1 UV IR Block Filter Cluster DSO Explore scientific coma corrector Gemini gf53 Globular cluster M12 Messier12 Newton 254/1000 Ophiuchus ZWO ASI071MC Pro

Messier 12 is a globular cluster located in constellation Ophiuchus. The cluster is 15,700 light-years away from Earth and contains approximately 200,000 stars. There are another two globular clusters in the vicinity: M10 south-east and M14 east.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	32x180s, Gain 94, bin 1x1,
Date	2019-06-01

M40 Double Star

June 1, 2019 JakubK

Asterism

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Asterism Double star DSO Explore scientific coma corrector Gemini gf53 M40 Messier40 Newton 254/1000 Ursa Major ZWO ASI071MC Pro

Messier 40 is a double star located in constellation Ursa Major (in the middle of the picture). Charles Messier was searching for the nebula in this part of the sky, which was observed by Johannes Hevelius. He was unable to locate any nebulous object, but he found this double star and catalogued them under the number 40. Double star should be a system of two stars, which are bonded by the gravity, but the latest measurements demonstrated that these two stars are close to each other only visually and they are completely unrelated.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	40x120s, Gain 94, bin 1x1,
Date	2019-06-01

M101 Pinwheel Galaxy

June 1, 2019 JakubK

Galaxy

2 Comments

Astronomik L-1 UV IR Block Filter Explore scientific coma corrector Galaxy Gemini gf53 M101 Messier101 Pinwheel Pinwheel Galaxy Ursa Major ZWO ASI071MC Pro

Messier 101 is a beautiful spiral galaxy, which can be located in the constellation Ursa Major. If I look back to my older picture, I must admit, it is worth spending a long time and dedicating some capture time for the hydrogen alpha channel.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	31x300s, Gain 94, bin 1x1,
Date	2019-06-01

M64 Black Eye Galaxy

May 23, 2019 JakubK

Galaxy

1 Comment

Astronomik L-1 UV IR Block Filter Black Eye Galaxy Coma Berenices DSO Evil Eye Galaxy Explore scientific coma corrector Galaxy Gemini gf53 M64 Messier64 Newton 254/1000 ZWO ASI071MC Pro

Messier 64 is a galaxy, which can be located in constellation Coma Berenices. The name “Black Eye” or sometimes “Evil Eye” got from the central dark cloud, which blocks partially the light coming from there. This galaxy is relatively close to us – only 17 million light-year, which is significantly less compared to visually neighboring galaxies in constellation Virgo.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	24x180s, Gain 94, bin 1x1,
Date	2019-05-23

M53 Globular Cluster

May 13, 2019 JakubK

Globular cluster

0 Comment

Astronomik L-1 UV IR Block Filter Cluster Coma Berenices DSO Explore scientific coma corrector Gemini gf53 Globular cluster M53 Messier53 Newton 254/1000 ZWO ASI071MC Pro

Messier 53 is a globular cluster located in constellation Coma Berenices. This cluster is quite far from galactic center of the Milky Way (60 000 light-year), which makes it to be located on the outer edge of our galaxy. However, it heading towards the center with speed approximately 63 km/s. The cluster contains 500 000 stars, but this cannot be verified by the photo I took, because it is 58 000 light-year from Earth and my telescope has very small aperture to resolve this kind of details.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR coma corrector
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	45x300s, Gain 94, bin 1x1,
Date	2019-05-13

M87 Virgo A Galaxy

May 6, 2019 JakubK

Galaxy

0 Comment

Astronomik L-1 UV IR Block Filter DSO Explore scientific coma corrector Galaxy M87 Messier87 Newton 254/1000 Virgo Virgo A Virgo A Galaxy ZWO ASI071MC Pro

I came back from La Palma, disappointed by the weather. Surprisingly, back home was nice Moonless weather, so I took my telescope out and captured Messier 87, which is bright and super massive galaxy in constellation Virgo. It’s one of the largest elliptical galaxy in observable universe and makes the central sport in galactic cluster in Virgo. This galaxy contains a lot of globular clusters, approximately 12000. In comparison our Milky Way contains only 200.

I am really happy that I captured this galaxy this year, because quite recently was the first photo of a super massive black hole in M87 was captured. I think everybody got across the orange picture, which was an effort of many scientists.

Technical details:

Telescope	Newton 254/1000 mm
Aperture	254 mm
Focal length	1060 mm
Mount	Gemini G53f
Autoguiding	ZWO 174MM, TS 60/240 mm
Camera	ZWO 071 Pro @-15°C
Corrector	Explore Scientific HR coma corrector
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	55x300s, Gain 94, bin 1x1,
Date	2019-05-06

M68 Globular Cluster

April 30, 2019 JakubK

Globular cluster

1 Comment

Astronomik L-1 UV IR Block Filter Avalon M-Zero Chasing darkness Cluster DSO Explore scientific coma corrector Globular cluster Hydra La Palma M68 Messier68 Newton 150/600 ZWO ASI071MC Pro

Messier 68 is a globular cluster located in constellation Hydra. The cluster contains more than 100,000 stars and it is approximately 33,000 light-years away from Earth. The best time for observation is between March and July. Observers from Central Europe have disadvantage, because M68 doesn’t raise much above the horizon. Therefore this cluster was one of my primary targets on La Palma, where M68 is much better visible. However, the weather was bad and I only got 40 minutes between the clouds.

Technical details:

Telescope	Newton 150/600 mm
Aperture	150 mm
Focal length	630 mm
Mount	Avalon M-Zero
Autoguiding	ZWO 174MM, Guidescope 30 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	19x120s, Gain 94, bin 1x1,
Date	2019-04-30

M93 Open Cluster

April 28, 2019 JakubK

Open cluster

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Avalon M-Zero Cluster Explore scientific coma corrector La Palma M93 Messier93 Newton 150/600 Open cluster Puppis ZWO ASI071MC Pro

Messier 93 is an open cluster located in constellation Puppis and it is about 3400 light-year away from Earth. My previous attempt to capture this object was not so successful, because M93 doesn’t rise far from horizon in Central Europe. On La Palma is the situation different, but only if the weather allows it. I was partially lucky and a hole between the clouds appeared and I got 44 minutes opportunity to capture this cluster properly.

Technical details:

Telescope	Newton 150/600 mm
Aperture	150 mm
Focal length	630 mm
Mount	Avalon M-Zero
Autoguiding	ZWO 174MM, Guidescope 30 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	22x120s, Gain 94, bin 1x1,
Date	2019-04-28

M83 Southern Pinwheel Galaxy

April 25, 2019 JakubK

Galaxy

1 Comment

Astronomik L-1 UV IR Block Filter Avalon M-Zero Explore scientific coma corrector Galaxy Hydra La Palma M83 Messier83 Newton 150/600 Southern Pinwheel galaxy Travel ZWO ASI071MC Pro

Messier 83 is a spiral galaxy located in constellation Hydra. It is one of the brightest and closest (15 million light-years) galaxies observable from Earth. On the other hand there are much brighter and closer galaxies, for example Andromeda is only 2.5 million light-years away and M33 Triangulum Galaxy is roughly 3 million light-years away.

Due to the fact that the M83 has very low southern declination (rises not far from horizon), thus it is very difficult to capture from light polluted Central Europe, I decided to take a trip to south. Specifically to La Palma (Canary Islands) and tried to photograph it from there. I had only one clear night out of ten, but together with M68 was this galaxy my primary target and I somehow managed. My plan was to capture more deep space objects, but the weather didn’t allow me.

Technical details:

Telescope	Newton 150/600 mm
Aperture	150 mm
Focal length	630 mm
Mount	Avalon M-Zero
Autoguiding	ZWO 174MM, Guidescope 30 mm
Camera	ZWO 071 Pro @-10°C
Corrector	Explore Scientific HR
Filters	Astronomik L-1 - UV IR Block Filter
Exposure	87x300s, Gain 94, bin 1x1,
Date	2019-04-25

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