Re: Star Eccentricity Help
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Mike Shade
The value of .5 is stated as round, I am curious if .05 is what people mean. According the Maxim's help, a value of .1 means that the star is longer in one axis by 10%, so a value of .5 would be 50%. That would be horribly out of round. Want to make sure that I am following. With my system, PW 17/AP1600 (non AE)/STL6303E camera/Optec Gemini rotating focuser/.63" pixel/5' subs I generally get roundness values from .01 to .05, depending on where the system is pointed/seeing.
Mike J. Shade Mike J. Shade Photography:
In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west. Can it be half a year since I watched her April rising in the east? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights
International Dark Sky Association: www.darksky.org
From:
main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian
Valente
>>> Is the solution a Planewave?? J
either that, or I hear AP has a 17" reflector they are working on :)
>>What should I expect for good eccentricity - .35ish??
generally eccentricity of 0.5 or lower is considered 'perceptibly round'
I'm not sure i would 'expect' that, but i would certainly aim for that
On Sun, Aug 9, 2020 at 9:10 AM Tony Benjamin <tonybenjamin@...> wrote:
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