Messier 94 (NGC 4736) is a spiral galaxy in constellation Canes Venatici.
Click on the image to load a full resolution version using a JavaScript viewer.
By toggling between the images (click on the button) it can be seen that the HII regions (reddish) correlate with bluish regions. That's because the HII gas clouds typically contain many young (blue) stars which are also responsible for the ionization. Furthermore the HII regions also emit [OIII] and H-beta light
which is collected by the blue filter.
The Galaxy has two ring structures. The inner ring with an apparent outer diameter of about 2' (arcminutes) is an active star formation region and contains a lot of young blue stars and HII regions.
The broader outer ring has a diameter of about 16' and is very faint.
FOV: | 0.47° × 0.47° | ||||||||
---|---|---|---|---|---|---|---|---|---|
Date: | 2020-2022 | ||||||||
Location: | Pulsnitz, Germany | ||||||||
Instrument: | 400mm Newton at f=1520mm | ||||||||
Camera Sensor: | Panasonic MN34230 | ||||||||
Orientation: | North is up (approximately) | ||||||||
Scale: | 0.8 arcsec/pixel (at full resolution) | ||||||||
Total exposure times: |
|
Image processing steps where:
RSS feed
News
Imprint
Media on this page can be used under Creative Commons Attribution-
Noncommercial-Share Alike 4.0 license or other licenses.