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Nyctimene

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About Nyctimene

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    Proto Star

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    gelbhaar@googlemail.com

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  • Gender
    Male
  • Interests
    Stargazing, music (lute, harpsichord, Early Music), reading, gardening, cooking, travelling, scuba diving, sailing
  • Location
    Germany, Odenwald

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  1. +1 for the Interstellarum Deep Sky Atlas (for an additional buy later). It's, AFAIK, the only atlas that allows you, at a glance, to estimate the visibility of a celestial target in scopes of different apertures (4", 8", 12" and larger) - just by using different fonts. Very useful to avoid disappointments when searching for an object with a scope of unappropriated aperture size. I'm using it with all my scopes (ranging from 3" up to 18" aperture) and can easily find suitable targets for them all. Stephan
  2. After a long break, I finally was out last night with the 18" Obsession to chase some galaxies in/near Leo's tail. Average conditions with NELM 5.5 mag /SQM-L 21.12. The start was the well known M 65/66 pair, showing it's oblong shapes and brighter cores with the 30 mmf/77° Wild-Heerbrugg eyepiece. Framed in the same field of view was the fainter 3628. Switching to the 12.5mmf Docter, giving 164x mag, I was able to make out the central dust lane quite well. Two accompanying galaxies 3593 and 3596. Over to the second trio - the pretty pair 3607 (10.0 mag) and 3608 (10.6), close together with b
  3. Agree with David (CarbonBrush). A dimmable red-white torch is the best allrounder, and not pricey. Have a look : https://www.teleskop-express.de/shop/product_info.php/language/en/info/p3461_TS-Optics-dimmbare-Rotlicht--und-Wei-licht-LED-Lampe-Astrolampe.html I've added two layers of deep red acryl to make it usable when searching for faintest DSO's. Stephan
  4. Hello, and welcome from a German stargazer (Dobsonaut; purely visual). Where (approximately) do you live in Germany? I might you give some suggestions about amateur groups (atm sadly all inaccessible due to Covid-19) Have a good time here in Germany, and enjoy our beautiful hobby/way of life! Stephan
  5. You've just given one answer in the other thread ("On Average,...") - "you really have to grasp the moment", and nothing, except binoculars, is, IMO, better suited for such minutes than a small frac on a AltAz mount. My vintage 80/400 FH Vixen frac, on a tripod with fluid head, is set up within one minute with no cooling down time; and I use it for solar white light, nightly for comets, star fields, open clusters, gaseous nebulas (with the appropriate filters), and moon views. Moreover, it's an excellent travel scope. With it's wide field views, it is complementary to my larger dobs. I never
  6. In addition to my post above: The link in the "Sky and Telescope" article ("gold mine") doesn't work any more; just found an excellent substitute (for the enthusiasts): https://commons.wikimedia.org/wiki/Concentric_craters_on_the_Moon Stephan
  7. I've observed Marth for the first time in May 2020. A rather small, slightly oblong crater; with the Heritage 130 P I just could spot the outer crater rim, but not the inner concentricity. I guess, you will need at least 6", better 8" of aperture and good seeing conditions to spot it (that evening, with only moderate seeing, even the 18" could not reveal the inner ring). Hesiodus A, a few degrees to the east, is much easier (14 km vs 7 km outer diameter). Here's a link to the observation of both: https://skyandtelescope.org/observing/celestial-objects-to-watch/crazy-about-concentric-crate
  8. No first hand report, but I assume, somewhere close to this might be a good choice: http://skinakas.physics.uoc.gr/en/ Stephan
  9. Some thoughts and experiences about the "binocular summation factor" by the owner of an 18" binoscope: https://www.cloudynights.com/articles/cat/articles/the-binocular-summation-factor-r3181 Stephan
  10. Hello, Keora, as John and Mike said above, you seem to be on the right track - finding Uranus with a telescope isn't an easy task for beginners; patience will bear fruits. Many Red Dot Finders are way too bright, even at the lowest setting. But you can dim the red dot sufficiently by putting a tiny piece of old fashioned, developed 35 mm photographic film (think of an old surplus diapositive) across the exit of the red LED - works well for my RDF's. You don't need to wear glasses when observing, if you are just short-or farsighted - you can correct this with the focuser. Only in
  11. Another vote for SkySafari Plus. A mighty tool, that replaces most of my star maps, when I am at the eyepiece. Makes star hopping and identifying objects a breeze. Very recommendable! Stephan
  12. Before buying new, I'd try to dig out the inherited Zeiss. Chances are, that it still will deliver very sharp views, as my vintage Zeiss Jenoptem (=Decarem built) 10x50 does. The minor drawbacks are a rather short eye relief (hence not well suited, if you need glasses for correcting astigmatism,) only single blue coating (resulting in a little loss of light) and, of course the lack of argon filling, waterproofness etc. (IMO, not too relevant for astro use). Years ago, I had a lot of fun with my vintage (40+) 8x30 Hertel+Reuss, a top notch German brand - hidden jewels - , under tropical sk
  13. Certainly not the 20th century concepts of the Kuiper belt and the Oort cloud, associated with the different orbits. I guess, that in the 18th and the beginning of the 19th century there was not enough statistic material and methodology known to Messier to develop the concept of accumulation of comets along the ecliptic plane. At least I didn't find any sources to answer this question. Stephan
  14. You won't go wrong with a decent Dobsonian mounted telescope, as it is easy to set up and to handle intuitively; e.g. the "standard" 200/1200 mm Skywatcher: https://www.firstlightoptics.com/dobsonians/skywatcher-skyliner-200p-dobsonian.html or, if storing/transporting is an issue, one of it's smaller brothers, the 130 P or 150 P Flextube versions: https://www.firstlightoptics.com/dobsonians/sky-watcher-heritage-150p-flextube-dobsonian-telescope.html Enjoy the journey! Stephan
  15. Short period comets (observable more often and reliable) can more often be found near the ecliptic plane: "The inclination of a comet's orbit with respect to the ecliptic (approximately, the plane spanned by the orbits of the major planets) depends on the origin of the comet. Long-period comets come from the Oort's cloud; since Oort's cloud is spherical, long-period comets approach the inner solar system at random angles as you correctly guessed (note that their orbit can be majorly perturbed as they pass near the giant planets). Short-period comets originate in Kuiper's belt and orbit ro
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