Tag: ZWO ASI071MC Pro

NGC 6188 Rim Nebula

NGC 6188 is sometimes called The Fighting Dragons of Ara. As a fan of Game of Thrones or Hobit, I simply had to capture this beauty. Two dragons are clearly visible in the middle. Their heads are illuminated by the open cluster NGC 6193. I knew that this nebula is dim, so I dedicated a lot of time to it. Specifically, I stacked 86 narrow band pictures, each 5 minutes long.

TelescopeSharpstar 94EDPH
Aperture94 mm
Focal length414 mm
MountRainbow Astro RST 135
AutoguidingZWO 174MM, QHY Mini Guide Scope
CameraZWO 2600MM @-10°C
CorrectorF4.4 Quad Reducer
FiltersAntlia Ha, OIII, SII 3 nm
Exposure86x300s, Gain 100, bin 1x1,
Date2022-05-30

And here is a photo of the same object, just with a shorter focal length.

TelescopeWilliam Optics RedCat 51/250 f4.9
Aperture51 mm
Focal length250 mm
MountiOptron Skyguider Pro
AutoguidingZWO 178MM, QHY Mini Guide Scope 30/130 mm
CameraZWO ASI071 MC Pro @-10 °C
FiltersAntlia Dual Band 5 nm
Exposure72x300s, ISO 1600
Date2022-06-01

Vela Supernova Remnant

Supernova Remnant in the southern constellation Vela is the closest remnant to Earth. It is “only” 800 light years away from us and it has a diameter of 100 light years. This is the reason why this deep space object didn’t fit in the field of view of my portable 250 mm focal length RedCat. The initial plan was to make a panorama of two pictures, but I failed to make an overlap, so I present two separate pictures. At least I have one more reason to come back to Namibia ,’-)

TelescopeWilliam Optics RedCat 51/250 f4.9
Aperture51 mm
Focal length250 mm
MountiOptron Skyguider Pro
AutoguidingZWO 178MM, QHY Mini Guide Scope 30/130 mm
CameraZWO ASI071 MC Pro @-10 °C
FiltersAntlia Dual Band 5 nm
Exposure36x300s, gain 95
Date2022-06-01


Norma Star Cloud

The constellation Norma is surrounded by the constellations Scorpius, Ara, Lupus, and Triangulum Australe. It forms the Milky Way’s Norma arm. Therefore there are a lot of stars anywhere you look. I wanted to capture something other than the nebulae, galaxies, or clusters. And this is exactly what I managed. This star cloud is not visible even from southern Europe, so I included it in the capture plan for my trip to Namibia.

In order to resolve the stars properly and fit the whole start cloud in the field of view, I used RedCat 51 telescope, having a focal length of 250 mm.

TelescopeWilliam Optics RedCat 51/250 f4.9
Aperture51 mm
Focal length250 mm
MountiOptron Skyguider Pro
AutoguidingZWO 178MM, QHY Mini Guide Scope 30/130 mm
CameraZWO ASI071 MC Pro @-10 °C
Filtersnone
Exposure40x180s, gain 95
Date2022-06-01

NGC 292 Small Magellanic Cloud

Small Magellanic Cloud, shorty SMC, is a dwarf galaxy, which is gravitationally bonded to the Milky Way. It has an irregular shape, which resembles a droplet. Compared to the Milky Way’s size (100’000 light-years in diameter) it’s significantly smaller (7’000 light-years in diameter) and it’s roughly 200’000 light-years far from us.

SMC is visually accompanied by two globular clusters. NGC 104 at the top and NGC 362 at the left side. The clusters are obviously much closer to us than the galaxy.

This galaxy is quite important for astronomy, because Henrietta Swan Leavitt, an astronomer at the Harvard College Observatory, discovered several variable stars in this galaxy. Variable stars change the intensity in periodic cycles. So, based on the apparent brightness of the variable star, the distance can be determined. Since this discovery, mankind can measure the distance between the galaxies.

The picture is a stack of 159 photos, 2 minutes each. This means in total I was photographing this object for 5.3 hours.

TelescopeWilliam Optics RedCat 51/250 f4.9
Aperture51 mm
Focal length250 mm
MountiOptron Skyguider Pro
AutoguidingZWO 178MM, QHY Mini Guide Scope 30/130 mm
CameraZWO ASI071 MC Pro @-10 °C
Filtersnone
Exposure159x120s, ISO 1600
Date2022-05-30

NGC 6744 Galaxy

NGC 6744 is a galaxy in the constellation Pavo. The galaxy has beautiful spiral arms, which attracted my attention and I spent 4 hours collecting the light coming from this 28 million light-years distant deep space object.

TelescopeMeade 10"
Aperture254 mm
Focal length2097 mm
MountMK 100K
AutoguidingMGEN 240 mm
CameraZWO 071 @-10°C
CorrectorTS 0.67 reducer
Filtersnone
Exposure78x180s, Gain 95, bin 1x1,
Date2022-05-28

NGC 5128 Centaurus A Galaxy

NGC 5128 Centaurus A is a galaxy, which can be found in cancellation, you can guess which one, Centarus. This galaxy is not visible from Europe or from the northern hemisphere. If anyone wants to observe or photograph it, has to go south. And this is exactly what I did. I went to Namibia, specifically to an Astrofarm Kiripotib. I went there with a plan and this Galaxy was my first and primary target. As for most galaxies, one needs a long focal length. Therefore, I rented a telescope there. Specifically, it was Meade 10″. I brought my own focal reducer TS 0.67 and attached my old ASI071. I made in total 133 pictures, each 3 minutes long, and stacked them together. This means nearly 7 hours of exposure time. The dust cloud blocking the light from the galaxy really popped out with a slight help of deconvolution.

TelescopeMeade 10"
Aperture254 mm
Focal length2097 mm
MountMK 100K
AutoguidingMGEN 240 mm
CameraZWO 071 @-10°C
CorrectorTS 0.67 reducer
Filtersnon
Exposure133x180s, Gain 95, bin 1x1,
Date2022-05-27

B33 HORSEHEAD NEBULA

Horsehead nebula is IMHO the most beautiful deep space object. It is located in the constellation Orion. Everybody knows this constellation because it can be easily identified by three aligned stars (Alnitak, Alnilam, and Mintaka), which forms the belt of the Orion.

The nebula is very dim. Therefore, visual observation is nearly impossible, unless you have a telescope, having at least 1 meter in diameter. To photograph it, one needs a very long exposure time. I used 5 minutes per image and I took 36 of them. The nebula complex is visually very large, so the optimal focal length should be shorter than 750 mm. I used a Newtonian telescope with a focal length of 1000 mm but reduced to 750 mm by the Nexus coma corrector. It turns the Newtonian into a light-collecting bucket, but the quality suffers from that. The stars in the corners are everything, but round. Moreover, I used dual-band filter Optolong L-eXtreme, which increased the contrast of the nebula, but also made the asymmetric halo around the bright stars. I played a bit with the white balance and pushed the colors into the orange tint, to reach the warmer feeling in cold February.

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length750 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 071 Pro @-10°C
CorrectorNexus coma corrector
FiltersOptolong l-eXtreme
Exposure36x300s, Gain 95, bin 1x1,
Date2022-02-09

IC443 Jellyfish nebula

Jellyfish Nebula is a supernova remnant in the constellation Gemini. A very long time ago a supermassive star exploded and emitted a lot of material into space. It is not clear when exactly it happened, but the latest research dates the explosion between a few thousand years and 30’000 years. The shape definitely resembles a jellyfish, having the head at the top and tentacles at the bottom and overall it looks like it floats in the space. It’s interesting how many nebulae have names related to an animal. For example the Seagull Nebula, the Elephant Trunk Nebula, the Eagle Nebula, the Lobster Nebula, the Horsehead Nebula, etc.

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length750 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 071 Pro @-10°C
CorrectorNexus coma corrector
FiltersOptolong l-eXtreme
Exposure48x300s, Gain 95, bin 1x1,
Date2022-02-06

IC2177 Seagull Nebula

I am not a huge fan of birding, but I captured this “Seagull” with pleasure. Initially, I noticed on my wide-angle photo, that there is a giant nebula north of Sirius. I checked in Stellarium what would be the optimal focal length and found out that this is a perfect target for William Optics RedCat combined with an APS-C sensor. Moreover, I was able to fit the M50 open cluster into the field of view (on the left side).

TelescopeWilliam Optics RedCat 51/250 f4.9
Aperture51 mm
Focal length250 mm
MountRainbow Astro RST 135
AutoguidingZWO 178MM, QHY Mini Guide Scope 30/130 mm
CameraZWO 071 Pro @-10°C
Correctorno
FiltersOptolong L-eXtreme 2"
Exposure85x180s, gain 95
Date2022-01-23

NGC1499 California Nebula

California Nebula is a cloud of ionized hydrogen gas (HII region), which can be found in the constellation Perseus. The nebula is 1320 light-years away from Earth and it is 100 light-years long. Visual observation is very difficult, due to very low brightness. The first person who spotted this nebula was Edward Emerson Barnard in 1885. Since it is an emission nebula, it can be relatively easily photographed even under the light-polluted sky, with help of a narrowband filter.

I always wanted to capture this nebula, but the focal length must be relatively short. This is a perfect opportunity to test the William Optics RedCat. This time not with Canon EOS 6Da, but I attached a cooled astro camera ZWO ASI071 and placed the Optolong L-eXtreme dual-band filter.

TelescopeWilliam Optics RedCat 51/250 f4.9
Aperture51 mm
Focal length250 mm
MountRainbow Astro RST 135
AutoguidingZWO 178MM, QHY Mini Guide Scope 30/130 mm
CameraZWO 071 Pro @-10°C
Correctorno
FiltersOptolong L-eXtreme 2"
Exposure105x180s, gain 95
Date2022-01-23

Comet C/2019 Y4 Atlas

The comet C/2019 Y4 Atlas was possible to spot in the constellation Lynx nearly two years ago (April 2020). This comet was discovered on 28th December 2019 by Asteroid Terrestrial-impact Last Alert System. The trajectory of the comet is suspiciously similar to another comet C/1844 Y1, which visited us nearly two centuries ago. Most probably it’s a fragment of the old visitor and the next opportunity to see this comet will occur in the year 2194.

It looks like a droplet drifting through the space. The picture was taken as the first light of the new telescope TS-Optics 150 mm f/2.8 hyperbolic Astrograph. This telescope disappointed me in its optical quality. So, don’t look at the stars in the corners. Postprocessing was quite tricky, but I somehow learned how to do it. In total, I stacked 44 exposures, each 3 minutes long, which means slightly more than 2 hours of integration time.

TelescopeTS-Optics 150 mm f/2.8 hyperbolic Astrograph
Aperture150 mm
Focal length420 mm
MountGemini G53f
AutoguidingZWO 174MM, QHY Mini Guide Scope
CameraZWO 071 Pro @-10°C
Corrector2.5" coma corrector
Filtersno
Exposure44x180s, Gain 94, bin 1x1,
Date2020-04-15

Comet C/2017 T2 PANSTARRS

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:

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length1060 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 071 Pro @-10°C
CorrectorExplore Scientific HR coma corrector
Filtersno
Exposure34x180s, Gain 94, bin 1x1,
Date2020-05-25

M81 Bode Galaxy M82 Cigar Galaxy

I already captured these magnificent galaxies some time ago (short description here), but with a different camera. Moreover, I upgraded the primary mirror of my Newtonian telescope and the difference is noticeable. My current camera has a slightly bigger sensor, therefore I managed to squeeze an additional galaxy NGC 3077 The Garland Galaxy (upper left corner) into the field of view.

The image was captured during two nights and in total it’s a stack of 100 pictures each 180 s long. Unfortunately, the light pollution in my area doesn’t allow me to capture a better picture.

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length950 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 071 Pro @-10°C
CorrectorMaxField coma corrector
FiltersNo
Exposure100x180s, Gain 95, bin 1x1,
Date2021-04-09

M99 Galaxy

This beautiful spiral galaxy is listed under number 99 in Messier’s catalog. It can be visually located during the spring months in the southwest corner of the constellation Coma Berenices. The galaxy has several spiral arms, which are the product of the interaction with another galaxy. This interaction also induced very high angular velocity, which is the highest in Messier’s catalog. Specifically, the outer parts move with a velocity of 1200 km/s with respect to the center of the galaxy.

I dedicated two nights to this galaxy. The telescope was collecting two whole nights the light traveling 45 million light-years. In total, the picture is a stack of 130 single shots, each 3 minutes long.

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length950 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 071 Pro @-10°C
CorrectorMaxField coma corrector
FiltersNo
Exposure130x180s, Gain 95, bin 1x1,
Date2021-04-05

NGC 253 Sculptor Galaxy

Every time when I chase the darkness in southern lands, I try to capture some deep space objects in the southern hemisphere, which are not visible from Central Europe. One of these objects is the Sculptor Galaxy, which can be found, surprisingly, in the constellation Sculptor (south from Aquarius). Here are some features: it is approximately 11 million light-years away from us, it has roughly 90 000 light-years in diameter (similar to Milky Way) and it is characteristic by the intense star formation. This galaxy is sometimes called Silver Coin or Silver Dollar Galaxy, but I pushed the colors into the yellow spectra, therefore it looks like a gold coin.

TelescopeNewton 150/600 mm
Aperture150 mm
Focal length570 mm
MountRainbow Astro RST 135
AutoguidingZWO 174MM, Guidescope 30 mm
CameraZWO 071 Pro @-0°C
CorrectorTS MaxField
FiltersNo
Exposure127x180s, Gain 94, bin 1x1,
Date2020-09-21

NGC 6559 Nebula

f we look in the middle of the night during the summer months (on the northern hemisphere) into the Milky Way’s core, we can find many prominent deep space objects, like Lagoon, Omega, Eagle, or Trifid nebulae. However, there are also not so well known, but also very beautiful, objects. For instance emission nebula NGC 6559, which can be located in constellation Sagittarius. The star-forming region is surrounded by the dark nebula B 91 in the shape of a heart. At the bottom left corner, a part of the Lagoon Nebula is visible.

TelescopeNewton 150/600 mm
Aperture150 mm
Focal length570 mm
MountRainbow Astro RST 135
AutoguidingZWO 174MM, Guidescope 30 mm
CameraZWO 071 Pro @-0°C
CorrectorTS MaxField
FiltersNo
Exposure54x180s, Gain 94, bin 1x1,
Date2020-09-21

NGC 6726 Nebula

NGC 6726 is a reflection nebula located in the constellation Corona Australis. Visually, there is a deep space neighbor, the Chandelier globular cluster NGC 6723. These deep space objects can be also found on my wide-angle picture of the Milky Way in the left bottom corner .

TelescopeNewton 150/600 mm
Aperture150 mm
Focal length570 mm
MountRainbow Astro RST 135
AutoguidingZWO 174MM, Guidescope 30 mm
CameraZWO 071 Pro @-0°C
CorrectorTS MaxField
FiltersNo
Exposure44x180s, Gain 94, bin 1x1,
Date2020-09-13

IC 1318 Sadr Region

Sadr Region, sometimes called The Gamma Cygni Nebula is a giant cloud of ionized hydrogen, located in the constellation Cygnus (Swan). The picture shows only a part of the whole complex. In order to capture the whole nebula, I would need a telescope with a much shorter focal length of the much bigger sensor of the camera. This is actually my second attempt. The first one from Milos Island was quite nice, but this time I dedicated a significantly longer time for this deep space object. Specifically, the picture is an integration of 405 minutes, which means nearly 7 hours in total.

TelescopeNewton 150/600 mm
Aperture150 mm
Focal length570 mm
MountRainbow Astro RST 135
AutoguidingZWO 174MM, Guidescope 30 mm
CameraZWO 071 Pro @-0°C
CorrectorTS MaxField
FiltersNo
Exposure135x180s, Gain 94, bin 1x1,
Date2020-09-11

NGC6888 Crescent Nebula

Another cloudless night and I decided to test the IDAS NB1 filter again This time on Crescent Nebula, located in constellation Cygnus. The nebulosity was captured well and it’s comparable to the narrowband image I captured a long time ago. However, the bright stars are surrounded by ugly reflections. I am not sure it’s due to the MaxField coma corrector or the filter. Next time I will try with ExploreScientific coma corrector and we will see.

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length950 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 071 Pro @-5°C
CorrectorMaxField coma corrector
FiltersIDAS NB1 Nebula Filter
Exposure103x180s, Gain 95, bin 1x1,
Date2020-08-20

NGC7000 North America Nebula

After capturing the Eagle Nebula, I was searching for another nebula to test the new IDAS NB1 filter and I picked NGC7000 North America Nebula, switched on autoguiding, and went to sleep. The next morning I processed 138 pictures, each 3 minutes long. Well, I must say that this filter is a very good option for astrophotography in light-polluted locations.

Technical details:

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length950 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 071 Pro @-5°C
CorrectorMaxField coma corrector
FiltersIDAS NB1 Nebula Filter
Exposure138x180s, Gain 95, bin 1x1,
Date2020-08-10