Quote:
Originally Posted by ngcles
Hi 你B & All,
Yes quite a number of quasars are within reach of 12".
BTW, which interface did you use to access the USNOA2??
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I used sky-map.org. You type in the name of an object and it displays the object and surrounding field, and if you move the mouse over objects a small pop-up appears giving various data foir that object.
Quote:
Just to save me hunting, I mentioned a star superimposed on the northern edge of or just outside PGC 62391 -- this (according to Megastar) is GSC 9073:481 (which according to the GSC is also a "non-star" -- ie one not to guide on for a host of possible reasons).
Megastar supplies a magnitude of 14.7 +/- 0.4. But, when you look at the image you posted of the group, this star is clearly shown and seems to be approximately of the same brightness (on the plate) as mid-fifteen's you record. On Realsky (POSS I), it is perhaps a fraction brighter than them.
Just curious as to what the true magnitude of that superimposed star on the northern halo of PGC 62391 is. I'd guesstimate 15.3 but what is it?
Best,
Les D
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Sky-map.org lists the star at the northern edge of PGC 62391 as mag 14.45.