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Ursa Astronomical Association

Binocular comet ZTF - 2.1.2023 at 05.30 - 2.1.2023 at 07.00 Orimattila, Artjärvi, Viestikallio Observation number 111282

Visibility Unclassified

Jorma Ryske, Etelä-Suomen kosmol. seura

Comet C/2022 E3 (ZTF) imaged with LRGB filters (Figure 1) with 4x10x1min exposures (2023-01-02_03:30UT) and in the second (Figure 2) mv mosaic image through the Clear filter with 10x1min exposures. The exposures are stacked according to the stars, registered when the comet is still moving that slowly, so in that sense this is a "correct" image. When you try to bring out the colors in the hair and tails, it goes a bit towards caramel saturation. The stringy ion tail stands out to the edge of the image by a degree, green comma 12'. A wide fan-like dust tail is in the direction of 0deg.

Figure 1) LRGB 4x10x60s

Picture 2) Mosaic Clear filter, 10x60s

Figure 3) R filter (620nm-700nm) 10x60s

Figure 3) shows a long ion tail in addition to the 620nm-700nm wide dust tail in the passband of the R filter. The appearance of the ion tail with the R filter indicates the possible presence of electrically charged water molecules in the tail, which emit spectral lines H2O+ [0,2,0],[0,3,0],[0,8,0],[0,6,0] / 670nm, 620nm, 616nm, 703nm.

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Additional information
  • Observation target
    • Comet
  • Visibility of the comet
    • Binocular comet
  • Name of the observation target
    • C/2022 E3 (ZTF)
  • Brightness in magnitudes
    • 7
  • Tail length
  • 1 degrees
  • Coma diameter
  • 12 kaariminuuttia
  • Weather
    • -3C

Technical information

TS 305/1200mm Newton, TS KomakorrF4, QSI690/ICX814, filter Astrodon RGB, Baader Clear, mount CEM60, Viestikallio remote observatory. FoV 36' x 28'. North ~ up, east left.

Comments: 2 pcs
Jorma Koski - 3.1.2023 at 10.04 Report this

No nyt on hieno!

Jorma Ryske - 4.1.2023 at 09.16 Report this

Tämä komeetta C/2022 E3 (ZTF) on tosiaan hieno kuvauskohde ja se kirkastuu entisestään vielä kuukauden verran.

Kuvaa prosessoidessa huomasin että tuo pitkä ionipyrstö näkyy selvästi myös R-filtterin kuvassa, se indikoi että pyrstössä on ionisoitunutta vettä H2O+

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