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Choose 12 objects, one for each month, with the only constraint to be within 1 hour either side of the meridian at the local midnight. They could be either north or south of the equator, it doesn't really matter and of angular size that, if printed, would nicely be framed in a A4 or A3 sized canvas.
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I would select heart nebula, M31 and Markarian's chain as part of them, for Sept, Oct and Feb maybe
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andrea tasselli: Do you have fov / camera&focal lenght limitation? Does it have to all be with the same scope? |
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Médéric Hébert: Anything goes as long as they can be framed nicely in a A4/A3-sized print (thus small objects in a large, otherwise empty, field won't do). |
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That's a fun question, Andrea. So just that I understand: A4/A3 print: usually print means a quality of 300 dpi, that would be (let's stick at A4) 3500 pix on the long side (or 7000 pix at 600 dpi), so not untypical for current day sensors. So basically you look for near sensor filling objects whatever your focal length is. Could be the spaghetti nebula at 250mm or M101 at 2500mm focal length. Matthias
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In that case, since A3 is roughly equivalent to 11''x17'' and at 300 dpi is about 3300 by 5100 pixels an IMX571 sensor will be assumed, I'll let you pick the Focal length needed to fill the frame ;) January: Seagul Nebula February: Keyhole Nebula March: Running Chicken Nebula April: M86 and it's neighbor May: Pinwheel Galaxy June: Milky Way core July: Lagoon Nebula August: Veil Nebula September: Lion Nebula October: Andromeda Galaxy November: Heart Nebula December: Crab Nebula |
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October - NGC 7331 & Stephan's Quintet November - M33, Triangulum galaxy December - M42, Pleiades |
