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Come join the friendliest, most engaging and inclusive astronomy forum geared for beginners and advanced telescope users, astrophotography devotees, plus check out our "Astro" goods vendors.
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"We love seeing your work and welcome any and all sketches on this forum, but please note whether your sketch is a through-the-eyepiece sketch or your rendition from an existing image / painting."
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+
SAO 84572.jpg (797 Bytes) Viewed 590 times
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX. GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets). Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5. Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS,*Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40 Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt. Amateur astronomer since 1970.
Telescopes Saxon 10" x 1200 Dobsonian, Bresser 114 x 500 Dobsonian, Saxon 70 x 400 Refractor.
Eyepieces ES 82* 2" 18mm, 1.25" 11mm, GSO 2" 30mm superview, Seben mzt 8-24, Sky Watcher 58* 4mm and various Plossls.
Bino's Saxon 10 x 50, Carton 12 x 50, 10 x 25 ucf.
Other Skywatcher Solar System Imager