Sketch ready:
Final drawing:

NGC 4535

NGC 4535

Drawing data

NGC 4535 Vir GX
Date(s) of observation:
2014.03.28/29. Ágasvár
2014.03.29/30. Ágasvár
Place(s) of observation:
Telescope(s) used:
16" f/4.4 Newtonian (MCSE Dobson)
Enlargement(s) used:
176x (10mm Delos)
Field size:
Author / Observer:
Peter Kiss


NGC 4535 drawing inverted into positive.
NGC 4535 drawing inverted into positive.

NGC 4535 is an especially beautiful member of the Virgo Cluster. The barred spiral galaxy with an apparent visual magnitude of about 10.0m is not an easy sight. At least concerning the detalis. The core is bright and very tiny. Going outwards the galaxy is getting relatively uniformly and gradually fainter until it disappears diffusely in the background. This uniformity is 'spoiled' by the bar which is relatively easy to see. It is pretty short (about 1') and it has a small bright spot in both ends. The spiral structure is much harder to see but it is visible. It is interesting that the areas between the bar and the arms (above and below the bar) are surprisingly dark.

After finishing the drawing I took a look at the map and the photo and it turned out that there are two more galaxies in the field that I could probably have seen (both are about 15.3m). They are NGC 4535A and PGC 41752. I didn't know about these galaxies and didn't look for them consciously. Note that there are more stars in the drawing between 15.9m and 16.0m.

Comparison with the photograph

NGC 4535 drawing using a 16
NGC 4535 drawing using a 16" Newtonian telescope. Peter Kiss
NGC 4535 photograph by ESO (European Southern Observatory) using the 8.2 m VLT and FORS1.
NGC 4535 photograph by ESO (European Southern Observatory) using the 8.2 m VLT and FORS1. Credit: ESO, Source:

The photo on the left was made by the ESO using the 8.2 m VLT and the FORS1 instrument. My inverted drawing has been rotated and cropeed to resemble the orientation and size of the photo.

Of course what I could see using an amateur telescope is far behind an image made using one of the biggest telescopes on Earth. Nevertheless the main structure was visible pretty well. The outer (and fainter) spiral arms remained hidden in the 16" Dobsonian just like the fine structure.

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