Sunday, October 10, 2010

Hartley, Neptune, Blue Flash and NGCs.. III

Continued..

Hunted bunch of NGC below Sculptor.

NGC 253 Sculptor Gal and 288 GC: The NGC 288 GC is not a typical GC. Its disperesed. Its very faint as well. From Jon's 16" scope also it seemed fainter, but the fuzziness can be felt in the finder as well. Indeed conflicting observation. Need to read more abt this one TBD. Once 288 is found, 253 is easy to locate. Again, can "feel" it in finder. Very large, Very elongated. At one point, felt like it has filled up the eyepiece. Messier wound't have missed it if it would have been on northern side. the galaxy defitnely shows some motelling-spots on it.

NGC 55: Jon showed me this one in NP 101. Very faint. I tried it in 16". Very easy to locate from Alpha Phx (southern constellation Phonix, just below sculptor). Huge, may be lil fainter than 253. Both 55 and 253 seem similar to me, except the mottelling part in 253.

NGC 300: Jon found this one in NP 101, but I wasn't able to locate it in 16". In NP 101 view, 300 seemed again similar to 55, may be lil smaller and fainter.

NGC 247: Don't remember much, except the location. Was an easy catch thru 16" scope as well.

M11 : Wild duck cluster seem fainter and very disperesed in 16" scope at 100x. When the sky rotates overnight, i have observed that its hard for me to locate the familiar object like M11 :).

Blue Flash nebula: Near del and saggita, was the highlight of the night in star hopping and locating this guy. the difficult part is its so small that you have to use lil higher magnification and that makes life lil difficult in low-mag star hopping. Its not like i haven't seen this guy before, but very hard to locate. Jon pointed to this one in NP 101, 16" and then i tried it with 10". In 10" with 17T4 @ 71x. You have imagine flipping the whole saggita constellation from Western to easter side. So its betn 29 Vul and Gamma Sge, with Del on left-southern side. In 71x, with 82deg nagler, you can fit 4 bright stars in a trapezoid shape, in one view. This nebula is at the center of one of the edges on left. It seems like a very-very small cluster of three stars and nebula is at the center. It looks like very-very small fuzzy ring, but still can be differentiated from the star...very hard.. You have to get familiar with the view, and then only you can really see it there. Once found, then high mags shows the details. disk doesn't show any blue color.. not sure why they call it blue flash, it confuses people ( me :-) ), when we look into the eyepiece. disk shows up like a big thick ring. central part shows lil dark hole (??).

M45 : when tired did lil bino viewing, and M45 again impressed me. 10 sisters shows up nicely. very bright blue stars. Fills up the whole view in binocs.

Double cluster : With low mags on Jon's 16" scope (~100x) shows the double cluster nicely. Can clearly see one is smaller than other. smaller is more compact than the bigger being being disperesed (isnt that obvious). Saw this one while looking at the comet.

Some double in orion head: Jon showed some double in the head of the orion, but seeing was way too bad to split the double..

M1 : Crab shows up nicely. In 16" as well cant see much details on the crab.. Its just one big, elongated fuzzy bright disk. absolutely no details inside.

In the end did some bino browsing for the comet..

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