Epsilon Arietis - Double Star Observing - Cloudy Nights
2014年11月20日 · Epsilon Arietis - posted in Double Star Observing: I like to scan an area of the sky before making use of charts and information services. I use a modest 6X30 to find 4th through 7th magnitude stars and then stop to look at them with a 5mm eyepiece in my 4 inch achromat, providing a magnification of 134X. On this particular night, the air was cold and still, steady and transparent, and within ...
Epsilon Arietis - Beginning Deep Sky Imaging - Cloudy Nights
2011年10月24日 · Epsilon Arietis, a fifth magnitude (4.60) binary, which lies well to the east of the classic figure of Aries (the Ram), is of the visually-close-nearly-equal variety. Of the same class, both white type A (A3) {or A2Vs} hydrogen-fusing dwarfs, fifth magnitude (5.17) Epsilon A (the eastern of the two) is just 0.4 magnitudes brighter than Epsilon ...
Some Doubles in Aries - Double Star Observing - Cloudy Nights
2025年1月19日 · Epsilon Arietis. Double star, STF 333 – 5.2/5.6 magnitudes @ 1.4 arc-seconds, at 73X there might be some elongation, at 183X the elongation is evident, at 335X occasionally the seeing settles enough to see the split with rough Airy discs slightly separated or touching, one is slightly brighter, but with this one observer experience …
Epsilon Arietis and 36 Andromedae Revisited - Cloudy Nights
2020年12月9日 · Epsilon Arietis was the easier to split. I saw a deeper notch than in 36 and perhaps a fine separation especially at 240x in the 2.5 Nagler. I would choose Epsilon over 36 if I were to create a list of top doubles in the Autumn sky. The reason I used two close higher power eyepieces was for comparison of image quality.
36 Andromedae and Epsilon Arietis a couple of tough nuts to crack
2020年11月10日 · Yes. 36 Andromedae and Epsilon Arietis are both big favourites of mine too. I get nice splits at medium magnifications on both through my William Optics 158 mm apochromatic refractor. As Rugby says, please do try to separate even tighter doubles with your 8 inch F/5.9 Newtonian bblamo. Clear skies from Aubrey.
2 doubles revisited in Aries + some more - Cloudy Nights
2022年1月13日 · Page 1 of 5 - 2 doubles revisited in Aries + some more - posted in Double Star Observing: Hello, one and all. I have just had 2 extraordinary early evenings (3 e’s ) observing some doubles in Aries - including 10 Arietis and Epsilon Ari. Tuesday 11th & Wednesday 12th January 2022 were both almost perfect seeing conditions with little or no wind. I enjoyed all these doubles with my William ...
Two new double stars for me - Cloudy Nights
2014年9月20日 · - Epsilon Arietis: AB: 4.63+5.59 mag, STF 333, ADS 2257, B=STF 333B. PA 209° Sep 1.40" (2002) The important difference is that Epsilon Arietis is apparently 1.40 arc-seconds rather than 1.5. This is a critical region for a 4 inch since the Rayleigh Criteria is 1.36 arc-seconds, the two disks are nearly kissing.
Gamma Arietis - The Ram's eyes - Sketching - Cloudy Nights
2023年12月15日 · Gamma Arietis - The Ram's eyes - posted in Sketching: I think I have just found my new favorite pair of double star. I have always adored equal brightness pairs like this one or Porrima. The view of this double star was good from both of my scopes, the 6 inch and the 80mm refractor. But I prefer the view through the 6 inch because of its lack of chromatic abberation. The 2 stars of this ...
2 doubles revisited in Aries + some more - Cloudy Nights
2022年1月13日 · Page 2 of 5 - 2 doubles revisited in Aries + some more - posted in Double Star Observing: Thank you very much, Jon! Heres to hoping you do get a clear night very soon. Last night (Wednesday) I had another excellent night in Aries. I revisited Gamma Arietis (Mesarthim), Lambda Ari, 10 Ari and Epsilon Ari. Lambda Ari was white and orange at 40x. But I also had success at separating the triple ...
Observing some doubles in Aries - 23 Dec 2021 - Cloudy Nights
2021年12月24日 · Whereas Epsilon Lyrae and Delta Cygni are so serene and delightful. I trust I have explained to our friend Sebastian in Germany my personal difficulties sufficiently. You see, Sebastian TS, Epsilon Arietis' stars are a lot brighter than …