NexStar 8SE; Stellarvue SVR90T; Celestron 102GT; Orion ST80 Orion 9x63, Oberwerk 15x70 binos
And there they still stood, obscurely commemorating man's triumph over time and matter and the triumph of time and matter over man. -- Aldous Huxley, on the Mayan stelae at the Quirigua ruins
Quote:Jon,Your explanation on true fov calculation using the f stop of the eyepiece is very interesting. How would this work for the baader Hyperion eyepieces. They have a built in Barlow type element that is 1.25 but the rest of the eye piece is like a 2 inch. I happened to pick up a used 13 mm Hyperion for 60 bucks. It gives me about a 3/4 deg TFov. The afov is 68.Thanks,Jeff
Quote: Pleiades are my absolute favorite feature of the night sky. Granted, my viewing experience is very limited. But most of what I view makes me think "that's interesting" or "that's cool," while the Pleiades make me think "that's one of the most beautiful sights anyone has ever seen." Brian
8"ACF, AR152, ED100, ST80, EQ6Pro, Duo-T, AZ3, EQ1
Quote:I can fit the Pleiades in my Meade 4000 series "26mm" EP. They only have a 52 degree aFOV. It's a little stuffed, but it can be done. Some site's say Pleiades is 110' but I look at it as the seven sisters and two parents. And that don't take 110' to do that. Stellarium says it's only 30' but I don't think that includes the 2 parents.
First and foremost observing love: naked eye.
Last but not least, telescopes.
And I sometimes dabble with cameras.
Eric NexStar 8SE,ES 102ED APO on Cdn TS Alt-AZ Lunt LS35THa on Vixen Porta-mount II SkyWatcher 8" Dob; Skywatcher 130 Newt HEQ5 Pro, MallinCam Univers & NexImage 5 more & more eyepieces 4.7 to 36mm Binoculars: Pentax 7x50; Celestron 15x70
Rob Astronomy compels the soul to look upwards and leads us from this world to another..... Plato
Quote: Yes Jon, I know the limitations of my scope very well. That's why I said I had to "fudge" the numbers to get the 2 degree FOV. If you want to "frame" the Pleiades in a 2 degree FOV then that's a personal preference. But it is not required to see the seven sisters and 2 parents. I was wondering if someone was confusing Pleiades and Hyades. That was why I questioned it. LOL Tony, that's one of my favorites also. That's why I use my 32mmm.