NGC6210, a little Summer-prince
Posted: Thu May 18, 2023 10:33 am
Yesterday evening I took out my 120mm ED Evo star to have a closer look at the DSO 's I observed earlier in the week with my 4 inch widefield instrument. Some of the well known Summer delights like the globular clusters M3, M13, M92, NGC6229 and the planetairies M57 and NGC6210 were among them.
Not unsurprisingly they all had a bit more "bite" in the 4.7 inch instrument than in the 4 incher. M13, nicely evenly lit in the 4 inch, with some individual stars, showed more stars at the periphery and in the core. As M92 and M3 have a bit more concentrated light, I think they stand out slightly more than M13 in a small instrument. The planetary NGC6210 ( Turtle nebula) stands out well. In the sketch the Turtle is a less condensed star.
The double star SAO 84572 (magnitude 7 and 7.8 separation 1.2 arcseconds), the brightest in the sketch, is obvious in the 120mm and less so in the 102mm instrument. That is to be expected too.
Sketch NGC6210
Simulation SAO84572 in the 120mm at high magnification 300+
Not unsurprisingly they all had a bit more "bite" in the 4.7 inch instrument than in the 4 incher. M13, nicely evenly lit in the 4 inch, with some individual stars, showed more stars at the periphery and in the core. As M92 and M3 have a bit more concentrated light, I think they stand out slightly more than M13 in a small instrument. The planetary NGC6210 ( Turtle nebula) stands out well. In the sketch the Turtle is a less condensed star.
The double star SAO 84572 (magnitude 7 and 7.8 separation 1.2 arcseconds), the brightest in the sketch, is obvious in the 120mm and less so in the 102mm instrument. That is to be expected too.
Sketch NGC6210
Simulation SAO84572 in the 120mm at high magnification 300+
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