Little Rosette Nebula

SH2-170 is a small, rarely photographed emission nebula with an embedded cluster of stars in the constellation Cassiopeia in the northern autumn sky.


recording data

object Sh2-170
date of recording
February 20, 21, 22 and 23, 2018
exposure 16.4 h, H-Alpha: 421x100", OIII: 171x100"
telescope Celestron RASA F2.2
focal lenght 620mm
filter Baader f/2 Highspeed 2" H-Alpha, Baader f/2 Highspeed 2" OIII
camera ZWO ASI1600mmc
guiding 250mm guide scope, MGEN
mount Celestron CGE pro
AstroBin click here

Small but nice

The Small Rosette Nebula (Sharpless 170) is located in the Perseus arm of our galaxy, about 7,500 light years away from Earth. In its center is a small, young cluster of stars, Stock 18. The bright star in the center of the nebula ionizes the surrounding hydrogen gas and causes the nebula to glow. The nebula has about 2/3 of the diameter of the full moon.

Baerenstein Observatory

private observatory
Marcel Drechsler





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