Tag: Nebula

M16 Eagle nebula

I am back home from Namibia, so I took the opportunity of a cloudless, moonless night to take my big Newtonian for a spin. The most prominent summer deep space object is obviously the Eagle nebula, so I pointed the telescope in the constellation Serpens and photographed this DSO whole night long. In total, I captured 64 images, each 5 minutes long.

Here is the “fake” Hubble color palette (SII, Ha, OIII):

And here is bi-color version (Ha, OIII, OIII):

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length950 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 2600MM @-10°C
CorrectorMaxField coma corrector
FiltersAntlia Ha, OIII, SII 3 nm
Exposure64x300s, Gain 100, bin 1x1,
Date2022-07-03

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

NGC 6357 Lobster Nebula NGC 6334 Cat’s Paw Nebula

Both Lobster and Cat’s Pas nebulae are located in the constellation Scorpius, both are approximately 5’500 light-years from us. I tried to photograph the Lobster Nebula before, but it wasn’t an easy target due to very low southern declination. From the southern hemisphere, it is much easier. So I took the opportunity when I was in Namibia and tried to capture both nebulae in one shot.

The composition of this picture was not correctly selected, but in the end, both are in the field of view. Here is the picture processed in the “fake” Hubble palette:

And here is the bi-color version (R-Ha, G-OIII, B-OIII)

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
Exposure62x300s, Gain 100, bin 1x1,
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


IC 4628 Prawn Nebula

IC 4628, also called Prawn Nebula is an HII region in the constellation Scorpius. Due to very low southern declination, it is badly visible even from southern Europe. A better place to observe/photograph this deep space object is obviously the southern hemisphere. For example in Namibia, where this beautiful nebula rises very high in the sky. The open cluster on the left side is called the Northen Juwel box cluster.

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
Exposure39x300s, Gain 100, bin 1x1,
Date2022-05-31

IC 2944 Running Chicken Nebula

IC 2944 Running Chicken Nebula is an H II region located in the constellation Centaurus. It’s a galactic neighbor of the Carina Nebula because they both belong to the Sagittarius spiral arm of the Milky Way Galaxy. I must admit that this was my secondary nebula target for my trip to Namibia. Therefore, I didn’t dedicate much time – only 3 hours. However, the details popped out, so overall, I am happy with this “fake” Hubble palette picture.

And here is an even more “fake” picture, where the stars are completely removed. However, the nebulosity gained a 3D-like look.

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
Exposure36x300s, Gain 100, bin 1x1,
Date2022-05-29

NGC 3372 Eta Carina Nebula

Eta Carina Nebula is the southern hemisphere’s most prominent deep space object. In fact, this nebula is the reason why I packed all my portable astro-gear and flew to Namibia. Carina is approximately 4x brighter than the Orion nebula, which could be considered a highlight of the northern hemisphere. Moreover, it’s much larger. The nebula is a combination of emission and dark nebulae, located in the constellation Carina and it’s roughly 8500 light-years away from us.

It was a struggle to get the rig working in Namibia, but after two nights I managed and the next day, when I processed the pictures, a big smile appeared on my face. Well done, mission accomplished.

During our stay at Kiripotib Namibia, the other guest rented a 14.5-inch Dobsonian telescope and allowed us to have a look at the Carina (thank you so much, Peter). It was a simply spectacular view. Such a huge aperture combined with TeleVue eyepieces – WOW effect was there. Moreover, the Dobsonian had a filter wheel with OIII, UHC, and H-beta filters. Just by turning it, one could see a completely different nebulosity. I was really happy to see this beautiful deep space object with my own eyes.

Here is the processed picture in the Hubble color palette.

Here I completely removed the stars by StarNet++

And here is bi-color version (R-Ha, G-OIII, B-OIII)

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
Exposure87x300s, Gain 100, bin 1x1,
Date2022-05-27

NGC2264 Cone nebula

The Cone Nebula is a molecular cloud of excited hydrogen gas, located in the constellation Monoceros. It belongs to the group of nebulae, which can be observed/photographed during the winter in the northern hemisphere. I tried to capture this object a long time ago without success. I must say, it’s a very difficult one, so I attempted this time with new equipment. Specifically new extra, super, mega narrowband filters, having a bandwidth of only 3 nm. Combined with a small 6″ Newtonian telescope I was able to generate a pretty decent picture.

Here is a fake Hubble palette edit:

And here is a more natural-looking bi-color edit:

TelescopeNewton 150/600 mm
Aperture150 mm
Focal length570 mm
MountRainbow Astro RST 135
AutoguidingZWO 174MM, QHY Mini Guide Scope
CameraZWO 2600MM @-10°C
CorrectorMaxField coma corrector
FiltersAntlia Ha, OIII, SII 3 nm
Exposure142x300s, Gain 100, bin 1x1,
Date2022-03-09

NGC2174 Monkey Head Nebula

Another nebula, which resembles a head of an animal is designated NGC 2174, sometimes called Monkey Head Nebula. After capturing the Horse Head Nebula in the constellation Orion, I waited for a few days for good weather and pointed my telescope again into the Orion, this time to its northern part. Monkey Head Nebula is an HII region, which is approximately 6400 light-years away from Earth. To find a monkey is not that difficult. There is a baboon’s head on the upper left side, which is looking into the constellation Taurus.

The best way to capture this nebula is by using narrowband filters. For this purpose, I ordered a new monochrome camera ZWO 2600MM with a 2″ filter wheel. The filters are equally important as a camera, so I decided on Antlia 3 nm. As a first light, I must say that this combination works really well. I made in total 90 exposures, 5 minutes each, which means over 7 hours of integration time.

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length950 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 2600MM @-10°C
CorrectorMaxField coma corrector
FiltersAntlia Ha, OIII, SII 3 nm
Exposure90x300s, Gain 100, bin 1x1,
Date2022-03-06

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

IC1396 Elephant Trunk Nebula

I have a new toy. Motivated by a quite bad experience with ASKAR 180 FMA and its chromatic aberration I started to search for a better pocket-size telescope. To decide which one was quite simple. I would say there is nothing sharper and nothing with a better reputation than William Optics RedCat 51mm. The detailed comparison with ASKAR will come a bit later. This is the first light, where I tested the portable setup – iOptron Skyguider on a tripod, Canon 6Da, and the RedCat. The Moon was shining like crazy, therefore I attached the dual narrow band filter Optolong L-eXtreme filter. After 3 hours of collecting the filtrated photons, a pretty nice picture came out of it. I took this DSO using the same camera combined with the ASKAR 180FMA (link) but in broadband. Therefore, it’s like comparing apples and oranges. However, the RedCat looks much sharper and it contains more details. I cannot wait to test the RedCat under dark skies.

TelescopeWilliam Optics RedCat 51/250 f4.9
Aperture51 mm
Focal length250 mm
MountiOptron SkyGuider Pro
AutoguidingZWO 174MM, TS 60/240 mm
CameraCanon 6Da
Correctorno
FiltersOptolong L-eXtreme 2"
Exposure62x180s, Iso 1600
Date2022-01-12

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

M16 Eagle Nebula

Eagle Nebula is probably the most known deep space object, due to one picture from the Hubble Space Telescope. The pillars of creation were detected, where the new stars are born. I already captured this nebula by using narrowband filters and a monochrome camera. This time I used a different approach – a one-shot color camera + a new IDAS NB1 Nebula Filter. This filter should completely suppress the light pollution from sodium lamps and partially from LED lamps, passing the most interesting wavelength of H-alpha, OIII, and H-beta. In my opinion, it works well even in my light-polluted home.

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
Exposure82x180s, Gain 95, bin 1x1,
Date2020-08-09