Vinter 2023

Januari - april 2023

I slutet av 2022 köpte jag ännu ett teleskop med lång brännvidd, så det blev mycket djuprymdsfoton under början av 2023. Sedan hade vi ju också flera roliga besök av våra numera fem barnbarn.

Comet C/2022_E3 (ZTF)
Comet C/2022_E3 (ZTF)
C/2022 E3 (ZTF) is a long period comet from the Oort cloud that was discovered by the Zwicky Transient Facility on 2 March 2022. The comet has a bright green glow around its nucleus which is due to the effect of sunlight on its molecules, especially diatomic carbon and cyanogen. The comet reached its perihelion on 12 January 2023, at a distance of 1.11 AU (166 million km), and the closest approach to Earth will be on 1 February 2023, at a distance of 0.28 AU (42 million km). The comet exceeded magnitude 6 and is dimly visible with the naked eye. Photographed with RC8 reflector telescope and ASI 2600MC color camera in Stuvsta, February 2023. 24*30s exposure with IDAS LPS D2 light pollution filter and postprocessed in Pixinsight with Comet align function.

Rolf Johansson