On the outskirts of Järvenpää, there was so much man-made light in the sky that you couldn't get a very brilliant shot of the brightest comet in the sky with camera optics. Mostly the coma came up.

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The previous evening, the usual clouds were in the way, but at dawn pearly clouds were almost the only clouds in the sky. The brightness in the direction of the Sun forced me to use very short exposures this time.

Images: 2 pcs

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(2212) Hephaistos (1978 SB) The Apollo/NEO asteroid was imaged on the first evening of the 2023 January talcos. The asteroid of the Hephaistos group was discovered by the Soviet Ukrainian astronomer Nikolai Stepanovich Chernykh at the Crimean Nauchi (095 – Crimea-Nauchnij) observatory on September 27, 1978. The target has been found as a 12.5mag target. The asteroid got its name from Hephaistos, the blacksmith god of Greek mythology. Hephaestus forged all the weapons of the Olympos gods, he was also banished from Mount Olympos because of his lameness. Source Wikipedia https://en.wikipedia.org/...

Images: 3 pcs

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A few galaxies caught the picture from the middle stages of the Markarian chain. The elliptical galaxy NGC 4473 and the bar-lens galaxies NGC 4477 are most clearly visible in the image. The smaller bar-lens galaxy NGC 4479 also stands out.

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The diagonally visible spiral galaxy, which was previously photographed in black and white on Tähtikallio, now ended up being the subject of a color image.

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(68359) 2001 OZ13 Amor/NEO asteroid imaged on the first night of the 2023 January talcos. The asteroid was discovered by the NEAT discovery program (644 Palomar Mountain/NEAT) at the Palomar Observatory on July 19, 2001. Total estimate 930m and rotation speed 18.07h/r. When photographed, the asteroid was at a distance of 0.2974au and at its closest on January 30, 2023 at 0.29199au. 1Fig. first image of the series L60s measured, 2023-01-20T 20:23:01UT 2459965.34931JDUT 10h06m53.63s +31d29'32.9" 16.849mag Std Dev 141.672 SNR22.732 FWHM4.861" ,JPL Horizon 20:230.63m53.63s +31d29'32.9" 31d...

Images: 3 pcs

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(162385) 2000 BM19 (2000 BM19) The Aten/NEO asteroid was imaged on the first night of the 2023 January talcos. The asteroid was discovered by the Linear Socorro Discovery Program (704 – Lincoln Laboratory ETS, New Mexico) on January 31, 2000. The asteroid has a size of 0.81 km and a rotation speed of 9.463 h/r. Spectral class spec_B=>O . The spectra of O type asteroids correspond to the spectra of L6 and LL6 chondrite meteorites, only 7 asteroids belong to the rare type. Source Wikipedia https://en.wikipedia.org/wiki/O-type_asteroid . (162385) 2000 BM19 asteroid is the only Ate type. When phot...

Images: 3 pcs

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C/2022 E3 (ZTF) The comet was imaged on the first evening of the 2023 January talcos. A comet on a hyperbolic orbit was discovered by the Palomar Mountain ZTF variable object search program (I41 Palomar Mountain ZTF) on 2022 March 2. The Zwicky Transient Facility (ZTF) is a wide-field search program for supernovae and other rapidly changing objects, based on the Samuel Oschin telescope, a 48" Schmidt telescope and a wide-field camera. The comet will enter perihelion on January 12, 2023. 1.11au from the sun. When photographing the comet, it was 0.48464au away in the Bear Guard, closest to it. i...

Images: 6 pcs

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This group of stars is not very brilliant, but it stands out well due to the low number of stars in the background. It was the last DS destination photographed during Tähtikallio's little Christmas weekend, because Cloudiness took over the sky.

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Comet C/2020 V2 (ZTF) was imaged on the first night of the 2022 December talcos. A comet on a hyperbolic orbit was discovered by the Palomar Mountain ZTF Variable Object Discovery Program (I41 Palomar Mountain ZTF) on 2020 November 2. The Zwicky Transient Facility (ZTF) is a wide-field search program for supernovae and other rapidly changing objects based on the Samuel Oschin telescope, a 48" Schmidt telescope and a wide-field camera. The perihelion comet will arrive on 2023-05-08 2.235au from the sun. When photographing the comet, it was 2.3609au away in Ursa Major, the closest it will be is ...

Images: 4 pcs

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(306399) 1996 AX1 (1996 AX1,1999 TV10) The Mars Crossing asteroid was imaged on the first night of the 2022 December talcos. The asteroid was discovered by the observatory of the village (municipality) of Farra d'Isonzo (595 – Farra d'Isonzo) on the Italian-Slovenian border on January 14, 1996. We've covered this before. The estimated size of the asteroid is 1.9 km. No other information can be found besides track information. When photographed, the asteroid was at a distance of 0.4198au and at its closest on November 25, 2022 at 0.41539au. 1Fig. first image of the series L60s measu...

Images: 3 pcs

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Photographing nebulae and galaxies on the opening night of Tähtikallio's little Christmas weekend would not have made sense due to the moon phase. The weather forecast still looked quite bad in the morning, but the tearing of the cloud cover gave the cell the opportunity to capture two fine and dense open star clusters.

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A fairly wide and evenly-bright open star group came into the picture this time. The cloud cover that was over the moon seems to reduce the reflections caused by the moon a little when filming.

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This galaxy turned out to be surprisingly dim when photographed. There were quite a few problems with the background sky.

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Photographing this spiral galaxy was surprisingly difficult. One would not have thought that the Moon, which was low in a small phase, would cause gradients, but maybe the loose Cloudiness caused them.

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Comet C/2020 V2 (ZTF) was imaged on the first night of the 2022 November talcos. A comet on a hyperbolic orbit was discovered by the Palomar Mountain ZTF Variable Object Discovery Program (I41 Palomar Mountain ZTF) on 2020 November 2. The Zwicky Transient Facility (ZTF) is a wide-field search program for supernovae and other rapidly changing objects based on the Samuel Oschin telescope, a 48" Schmidt telescope and a wide-field camera. The perihelion comet will arrive on 2023-05-08 2.235au from the sun. When photographing the comet, it was 2.6148au away in Ursa Major, it will be closest to 1.85...

Images: 5 pcs

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This rod spiral galaxy does not celebrate with its surface brightness. It would be good to get more exposure, even if the essence of the subject came out reasonably well.

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29P/ (Schwassmann-Wachmann 1) A periodic Jupiter family comet was imaged on the first night of the 2022 November talcos. Eruptions sometimes happen in the comet, that's why we have tried to photograph several times. The comet's orbit is outside the orbit of Jupiter and comes close to Jupiter 2037 to less than 1au. Eruptions may increase the brightness by 1-5 mag. The size of the large comet nucleus is 60.4 km. When photographing, the comet was 5.3204au away, at its closest 5.078au on December 29, 2022. The comet is now in its normal state. I measured the brightness T15.4mag with the As...

Images: 3 pcs

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The purpose was to photograph in color the easily distinguishable rod lens gala that was photographed in black and white less than a year earlier , and we can be satisfied with the end result. Even the slightly irregular shape of the object stood out nicely.

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(7763) Crabeels (1990 UT5,1994 RE1) A mid-main belt asteroid imaged on the first night of the 2022 November talcos. When we photographed comet C/2021 Y1 (ATLAS), this was included in the pictures. The asteroid was discovered by Belgian astronomer Eric Walter Elst at the ESO La Silla Observatory (809 European Southern Observatory, La Silla) on 16 October 1990. Elst has found a total of 3868 asteroids and comet/asteroid 7968 Elst-Pizarro. Source Wikipedia https://en.wikipedia.org/wiki/Eric_Walter_Elst . The asteroid got its name from the Dutch, Antwerp organist Henri Crabeels (b. 1904). The size...

Images: 3 pcs

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