C/2019 Y4 (ATLAS) Comet

Comet with a near-parabolic orbit, which rather certainly will be visible to the naked eye at may this year. Was discovered by the ATLAS survey on December 28, 2019. It is possible the comet may be visible to the naked eye sometime in April or May 2020. It will reach its nearest point to Earth on May 23 and come to perihelion (closest to the Sun) on May 31.

Source of some information: https://en.wikipedia.org/wiki/C/2019_Y4_(ATLAS)

Kometa C/2019 Y4 (ATLAS) + zoom na kometę

I must admit, without beating, that stacking and processing of the comet was a very difficult topic for me. It was a challenge I didn’t have in astrophotography till now. My basic tool for stacking astrophotography images has completely failed. Quite rightly, because the APP has not (yet!) implemented the necessary functions for stacking photos containing comets. A standard stack of photos taken in APP always gives the same result, nicely aligned stars and the comet appeared as a blurred galaxy.

Below you can find some photos, that were created during testing various configuration options available in DSS. Each photo has its own beauty, so I decided to show them all.

Below is a stack with orientation for a comet with the great “HALO” occured.

Kometa C/2019 Y4 (ATLAS) z wielkim HALO - ślad gwiazd powstał podczas stakowania

After digging up the Internet resources, it turned out that DSS has the necessary functions already for stacking images, containing a comet. I have to admit it’s pretty good at it, if you stack light frames aligned for comet or star-oriented images. BTW the APP software making final stack with stars definitely better. DSS completely disappoints when stacking photos with stars and comet orientation simultaneously. I’ve tested a whole range of configuration options available in DSS and the result was always the same – crap in the final picture.

Kometa C/2019 Y4 (ATLAS) + zredukowany ślad gwiazd (inny algorytm stakowania w DSS)

What to do? How much I was thinking about how to bite this topic. Yes, I know, PixInside will say purists, but I don’t have time to learn another program just to process comets and simply saying, I just don’t want to.

I did not give up the topic. While testing many options available in DSS for stacking, I found that, with a specific DSS options setting, you could get a stack that contains small amounts of star trails but the comet stack was very nice of quality. Going forward I was able to get two stacks with comet of different colors, almost without stars in the background of the comet. With all those of photos with comets and stars made with APP, I could already play with masks in Gimp and put together three different photos into one, which has point stars and the comet as it should be.

Huh! it gave me a hard time processing this comet, like hardly any other subject in the astrophotography. My various struggles with the equipment for this hobby, did not cause me as much trouble as this comet. Even doing modifications of my NEQ6Pro assembly from gears to belts, it was like a nice walk for a beer.

Stack with algorithm oriented for a comet, with star reduction.

Kometa C/2019 Y4 (ATLAS) - bez gwiazd w cieniu HALO

Once again, I greet my colleagues Maciej Pawłowski and Marek Szymoński, who virtually accompanied me at that time and also photographed the sky.

Pictures taken near Bielsko-Biała.

Equipment:

  • Canon EOS 6D with IDAS LPS-D2 48mm LP filter and Coma Corrector not perfect suitable for my Newton telecope model,
  • Newton CT10 250/1200 [mm], F4,8
  • NEQ6Pro mod.

Processing:

  • Lights – 127 x 1600 ISO, 180[s]
  • Calibration frames: Darks, Flats, Bias

Orion Nebula (M42 or NGC 1976)

Farewell to Orion – my colours interpretations.

Winter is practically gone. Orion is almost no longer visible at night. We’ll see him again in late autumn. It will again become one of the most interesting places in the night sky to photograph.

Wielka Mgławica w Orionie (M42 / NGC 1976) - moja interpretacja barw

TheOrion Nebula (M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion’s Belt in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of 1,344 ± 20 light years and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. It has a mass of about 2,000 times that of the Sun. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula.

Source: https://en.wikipedia.org/wiki/Orion_Nebula

Wielka Mgławica w Orionie (M42 / NGC 1976) - moja interpretacja barw

Photos taken near Bielsko-Biała in two sessions at 17 and 24th of March 2020.

I have slightly improved the colors in both previous pictures.I have added the third photo, it’s only stack plus a bit of background noise reduction, without heavy processing to bring all out everything what is possible, as in the previous two photos. I’m starting to be convince myself, that the last photo is probably the best.

Wielka Mgławica w Orionie (M42 / NGC 1976) - stck - delikatne zredukowanie szumu tła

Equipment:

  • Canon EOS 6D with IDAS LPS-D2 48mm LP filter and Coma Corrector not perfect suitable for my Newton telecope model,
  • Newton CT10 250/1200 [mm], F4,8
  • NEQ6Pro mod.
  • Composition: Astro Pixel Processor v1.078,
  • Processing: GIMP v2.10.14 + plug-ins and RawTherapee 5.6,
  • Lights: 21 x 60[s] ISO 1600,
  • Flats: 20, ISO-1600,
  • Darks: 9, ISO-1600,
  • Bias: 20, ISO-1600

C/2019 Y4 (ATLAS) – TimeLaps

Comet with a near-parabolic orbit, which was discovered by the ATLAS survey on December 28, 2019. It is possible the comet may be visible to the naked eye sometime in April or May 2020. It will reach its nearest point to Earth on May 23 and come to perihelion (closest to the Sun) on May 31.

Time Laps of C/2019 Y4 (ATLAS) – Comet with a near-parabolic orbit

Source: https://en.wikipedia.org/wiki/C/2019_Y4_(ATLAS)

I’ve took photos of the comet for the first time in my life. I admit that stacking and processing the comet is quite a demanding topic, I’m testing different processing options present. Well, it was easier for me to make this timelaps than a good stack, which I still have to work on.

Equipment:

  • Canon EOS 6D, with IDAS LPS-D2 48mm LP filter and Coma Corrector not perfect suitable for my Newton telecope model,
  • Newton CT10 250/1200 [mm], F4,8
  • NEQ6Pro mod.

Processing:

  • RawTherapee 5.6,
  • KdeNlive 19.12.3.
  • Lights – 127 x 1600 ISO, 180[s]

Leo Triplet

Also known as the M66 Group is a small group of galaxies about 35 million light-years away[5] in the constellation Leo. This galaxy group consists of the spiral galaxies M65, M66, and NGC 3628.

Source: https://en.wikipedia.org/wiki/Leo_Triplet

Grupa M66 – Triplet Lwa

Full resolution: http://www.astrofoto.pekdar.net/wp-content/uploads/wppa-source/album-8/Triplet_Lwa-v1.png

The first test photo taken on the new Orion Optics CT-10 telescope on a modified assembly (gears replaced with belts + new bearings) NEQ6Pro. I did not collimate the telescope, I used it as it came from the supplier. You can see with the stars that I need to improve collimation. Flats didn’t work out as they should, but I somehow corrected it in the GIMP. The coma corrector I used with the previous Newton 1000/200 [mm] did not like this telescope model too much. The IDAS LPS-D2 48mm LP filter, which I used for the first time, passed the 5+ exam. This set will need to be further improved.

Grupa M66 – Triplet Lwa - powiększenia galaktyk

Full resolution: http://www.astrofoto.pekdar.net/wp-content/uploads/wppa-source/album-8/Triplet_Lwa-v1-zoom.png

Photos taken during night at 14/15-3.2020 near Bielsko-Biała city.

Equipment: Canon EOS 6D, O.O. CT-10 1200/250 [mm], F4.75, coma corrector, IDAS LPS-D2 48 [mm], NEQ6Pro.,

  • Composition: Astro Pixel Processor v1.077-6,
  • Processing: GIMP v2.10.14 + plug-ins (Linux),
  • Lights: 57 x 180[s] ISO-800,
  • Flats: 24 ISO-800,
  • Darks: 15 ISO-800,
  • Bias: 20 ISO-800