Monday 7 August 2017

#110 Hercules NGC Project Part 4: Uranometria Chart 68

This is a busy chart, so I will do it in 2 sections, both seen below.

Chart 68, Right Side 

eg 6201:  0'.3 x 0'.2:  Vis. 14.6; SB 11.4:  Using a hand-drawn detailed star chart (I use Deep Sky
eg 6203:  0'.6 x 0'.6:  Vis. 14.4; SB 13.1:  Objects Browser, an excellent on-line resource), I eventually found the correct area to search.  Both galaxies can be glimpsed at 187x.  6903 is larger and easier to see, though it appears stellar at times.  6201 is stellar at 187x.  250x, 272x, and 378x give good glimpses of 6903, using averted vision.  In this range even 6201 improves somewhat.  It is very small with averted vision.  Both galaxies are close to pn 6210.  A 16" would be a much better search tool.



http://www.ngcicproject.org


pn 6210:  21"; Vis. mag. 8.8; Cent. * mag. 12.6:  Spotted at 60x, it is an incredibly bright object,and fun to observe.  A filter is not needed.  The central star is not easy to distinguish because of the overall brightness.  I was able to observe the nebula up to 500x, one of the very times I use this high a magnification.  It appears oval and pretty large at 375x and 500x.  There seems to be fainter edges.  The object is almost football-shaped.  It was seen well back in the old 8" days, and no doubt can be viewed with a 6".
http://www.ngcicproject.org

eg 6228:  0'.9 x 0'.5:  Vis. 14; SB 13.3:  I needed another diagram for this faint object.  Observed at 136x (barely), it is a very faint cigar at 187x and 250x.  It is pretty small.
http://www.ngcicproject.org

eg 6233:  1'.4 x 1'.1:  Vis. 13.3; SB 13.5:  Suspected at 100x, the galaxy sighting was confirmed at 136x.  At 187x a brighter center is noted, with fainter haze surrounding.  At 250x it is ghostly, large, and very oval.  It now shows a stellar core.  A 9.5 mag. star is just south following, making location fairly easy.
 http://www.ngcicproject.org

eg 6243:  1'.1 x 0'.4:  Vis. 14.1; SB 13.1:  Observed at 136x, 187x, and 250x.  I saw a pretty large but very faint very elongated oval.  The middle area is much brighter.  Seen best with averted vision.
 http://www.ngcicproject.org

eg I. 4630:  0'.8 x 0'.5:  Vis. 13.6; SB 12.5:  This one seemed within reach.  It was suspected at 136x and confrimed at 187x.  It has a stellar core, is very small, and very faint.  At 250x it formed a dim cigar shape.  At 272x a bright core is visible, with a much fainter surrounding envelope.  Averted vision shows it best.  Tricky to see at first.

eg 6267:  1'.3 x 1':  Vis. 13.1; SB 13.3:  Spotted at 100x, as the sky kept getting better and better tonight (July 26th/16).  At 136x the galaxy is pretty large, oval, and showing a bright center.  It is easy to spot in this range.  At 187x and 200x it is large and pretty faint.  It appears evenly lit.
 http://www.ngcicproject.org

eg 6276:  0'.4 x 0'.3:  Vis. 14.6; SB 12.2:  78 was seen at 100x, being small but very bright.  Up to
eg 6278:  2' x 1'.2:  Vis. 12.4; SB 13.2:  272x shows a very bright center, oval.  The extensions are not obvious; it just seems large and oval.  The galaxy appears significantly smaller than its given dimensions.  76 was spotted at 136x.  It is not difficult to identify, but too small to notice anything much.

eg I. 1236:  1' x 0'.8:  Vis. 13.6; SB 13.2:  Glimpsed at 100x, it is a bit easier to identify at 136x.  Seen well at 187x, it is slightly oval and pretty big.  It sits between 2 faint stars, though not directly between.  The galaxy fades at 250x, with a bright star nearby masking it (mag.7.7).

Next, a group of 8 galaxies, all located in the same half degree field.  Look between +27 and +28 degrees, and between 16 hours 56 minutes R.A. and 17 hours.

eg 6261:  1'.4 x 0'.5:  Vis. 14; SB 13.4:  Spotted at 136x.  It becomes a faint but decent slash at 187x.  Views are still good at 250x.  The galaxy is pretty wide and fairly long.  
 http://www.ngcicproject.org

eg 6263:  0'.0 x 0'.9:  Vis. 13.7; SB 13.4: Spotted at 100x, north of a faint star, and between it and a 9.3 mag. star.  The galaxy is very close to the fainter star.  Good views can be had at 136x and 187x, best with averted vision.  There is a bright stellar core.  The object is fading at 250x.
 http://www.ngcicproject.org

eg 6264:  0'.7 x 0'.5:  Vis. 14.5; SB 13.2:  65 can be spotted at 136x, preceding 6269 (below).  It is
eg 6265:  0'.9 x 0'.6:  Vis. 14.2; SB 13.4:  pretty large, very oval, and pretty bright with averted vision.  Good views were had at 187x and 250x.  6264 is much smaller and much fainter, sighted at 187x, 200x, and 250x.  It can be found north following a faint star, and only with averted vision.  It is very small and very faint.
 http://www.ngcicproject.org

eg 6269:  2' x 1'.6:  Vis. 12.2; SB 13.5:  This big, fairly bright galaxy sits at the heart of a cluster of 8 NGC galaxies.  Most are very faint.  69 was spotted at 60x.  At 100x it showed a big oval shape, pretty bright, especially the center.  136x shows a stellar core.  187x shows at least 2 very faint stars south, and another north.  200x and 250x give good views, especially of the large, central area, brighter than the outskirts.  The best object of this tight group of 8 galaxies.
 http://www.ngcicproject.org

eg 6270:  0'.5 x 0'.5:  Vis. 13.3; SB 11.9:  Don't believe the hype!  This is the most difficult of the group!  Think at least 2 mag. fainter than given.  It is very, very small and very, very faint, a threshold object at 187x, 200x, and 250x.
  http://www.ngcicproject.org

eg 6271:   0'.6 x 0'.6:  Vis. 14.1; SB 12.8:  
eg 6272:   0'.5 x 0'.2:  Vis.  14.5; SB 11.9:  Both of these galaxies were easier than 6270.  71 was not difficult using averted vision.  72 is very small and very faint.  It can be glimpsed using 187x and averted vision.  72 is not for the faint of heart.  Both are seen at 250x.
 http://www.ngcicproject.org
                                                                                                                                           

eg 6308:  1'.2 x 1'.1:  Vis. 13.4; SB 13.5:  Observed at 136x and 187x, preceding a field of faint stars.  The galaxy is large, pretty bright, and round.  It is very close to the pair 6314/15, which are just south following.
  http://www.ngcicproject.org

eg 6314:  1'.4 x 0'.7:  Vis. 13; SB 12.8:  14 is pretty large, bright, and elongated.  It was spotted at
eg 6315:  0'.8 x 0'.6:  Vis. 13.2; SB 12.3:  136x.  It just precedes a double star, a close pair and pretty faint.  6215 is small and faint, located between 6214 and a bright star.  187x shows both objects well.
  http://www.ngcicproject.org

eg 6321:  1'.1 x 1':  Vis.  and SB 13.4:  Spotted at 136x, it is small, round, and faint.  At 187x it is best with averted vision, being close to 2 stars.  It is round and faint.  Views are best at 200x.  It fades at 250x.  A bit tricky to locate.


NOTE:  For eg 6274, 6274A, 6282, 6330, 6364, 6486, 6487, UGC  11017, see blog entry for Chart 50 (forthcoming).



Chart 68, Left Side

eg I. 1256:  1'.6 x 1':  Vis. 13.2; SB 13.7:  Located at 136x, the galaxy is large, oval, and faint.  Best view is at 187x, as it is fading at 250x.  It is pretty large, though, and lies in a bright star field.

eg 6371:  0'.8 x 0'.3:  Vis. 14.3; SB 12.6:  6372 was spotted at 100x, and the much smaller and
eg 6372:  1'.7 x 1'.1:  Vis. 12.9; SB 13.4:  fainter 6371 at 136x.  72 is bright, oval, and quite easy to see, especially with averted vision.  71 was seen best at 187x, and only with averted vision.  It is small, oval, and very faint.
http://www.ngcicproject.org

eg 6408:  1'.6 x 1'.4:  Vis. 12.7; SB 13.4:  Spotted at 100x, it was pretty large, round, and very faint.  150x shows it moderately better, with a brighter center now seen.  187x gives the optimum view, showing it to be big and round, but not very bright.
http://www.ngcicproject.org

eg 6417:  1'.4 x 1'.2:  Vis. 13.1; SB 13.5:  Suspected at 100x ,the galaxy is located easily at 136x, despite its proximity to a mag. 7 star.  It is round, reasonably bright, and relatively close to the star.  It becomes more ghostly at 187x, and quite large, especially if the offending star is kept out of the field.  It appears to be evenly lit.
http://www.ngcicproject.org

eg 6427:  1'.6 x 0'.6:  Vis. 13.3; SB 13.1:  Spotted at 136x, it was round, bright, and showing a stellar core.  At 187x a few faint stars are seen very near.  Views are still good at 250x, though I am only seeing the central globe.
http://www.ngcicproject.org

eg 6429:  1'.9 x 0'.6:  Vis. and SB 13.1:  Spotted easily at 136x, it is bright and very oval.  At 187x a very faint star lies in or close to the haze.  250x gives a good view.  272x shows a bright stellar core, and good views overall.
http://www.ngcicproject.org

eg 6430:  1'.7 x 0'.5:  Vis. 13.5; SB 13.2:  Uranometria does not list the NGC number, instead calling this UGC 10966.  Other sources informed me that this is, indeed, eg 6430.  Spotted at 187x, it was very elliptical and very faint.  It is located just north of a bright star (mag. 9.5) and south of a faint asterism.  My telescope computer calls 6430 an asterism.  Interesting stuff!
http://www.ngcicproject.org

eg 6442:  1'.9 x 1'.5:  Vis. 12.6; SB 13.7:  Spotted at 100x, it appeared oval in shape.  At 150x it is pretty bright, though not very large.  187x and 200x occasionally show it as a much bigger object.  It can be found just preceding a tiny, faint triangle of stars.
http://www.ngcicproject.org

eg 6452:  0'.5 x 0'.5:  Vis. 14.4; SB 12.7:  Glimpsed at 150x and 187x, it is elusive, small, dim, and round.  It is just preceding a faint group of 3 stars.  At times the galaxy appears stellar.
http://www.ngcicproject.org

eg 6458:  1'.3 x 0'.9:  Vis. and SB 13.4:  Both galaxies can be seen at 100x.  At 150x 58 seems a bit
eg 6460:  1'.9 x 1'.1:  Vis.  13.1; SB 13.8:   brighter, and though appearing pretty large, 60 is still showing well.  It is now quite elongated, with a slightly brighter middle.
http://www.ngcicproject.org

eg 6467:  2'.6 x 1'.7:  Vis. 12.6; SB 14.1:  Spotted at 100x, it was large, oval , and very faint.  At 150x the full extent of the galaxy is trying to come through, causing flaring in all directions with averted vision.  Seen best at 187x, the galaxy is involved with several very faint foreground stars.  A possible stellar core was noted.  It sits between two relatively bright stars, the south one being double.
http://www.ngcicproject.org

eg 6482:  2' x 1'.7:  Vis. 11.4; SB 12.8:  At 60x and 100x, the galaxy looks like a very bright planetary nebula.  150x shows some very faint haze with averted vision, but the center is extremely bright.  187x, 200x, and 250x show a large, round, very faint haze surrounding an almost blindingly bright central core.  A bright galaxy but otherwise unexciting.

eg 6484:  1'.9 x 1'.9:  Vis. 12.3; SB 13.6:  Spotted at 100x and observed well at 136x.  It is very large, round, and pretty bright.  Good views were had at 187x, 250x, and 272x.  It is very large, round, pretty bright, and has a stellar core.  Also seen back in the day with the Edmund 8".
http://www.ngcicproject.org

eg I. 1269:  1'.7 x 1'.3:  Vis.  12.8; SB 13.5:  Located at 100x, it was large and oval, and sitting within a bright triangle of stars, approx. mag. 11.5.  Though faint overall at higher powers, the central area stays pretty bright up to 200x.

eg 6490:  1.'1 x 0'.9:  Vis. 13.5; SB 13.3:  This turned out to be a lovely pair of galaxies, and I
eg 6495:  2'.1 x 1'.8:  Vis. 12.2; SB 13.5:  spent considerable time here.  The pair are separated by the base line of a faint triangle of stars, with the north preceding one being double.  Both galaxies were seen at 100x, but it was at 150x that the size difference really comes through.  95 appears to be a tiny bit brighter overall than 90, but not by much.  They remain in the same field of view at 187x and 200x.  Recommended with a 12".
http://www.ngcicproject.org

eg 6500:  2.'2 x 1'.6:  Vis. 12.2; SB 13.4:  Despite a 7.4 magnitude star in the field, both galaxies
eg 6501:  2' x 1'.8:  Vis. 12; SB 13.3:   were seen at 100x, where they already appear to be very bright and quite large.  150x shows them as remarkably similar in appearance, and still really bright.  At 187x and 200x things remain very bright, and stellar cores are noted.  6500 now appears oval.  200x and 250x show both objects well, and they make another fine pair, worth seeking out with a 12".  I applied 300x, but it did not improve things over 250x.  Now, if it weren't for that 7.4 mag. star...
http://www.ngcicproject.org

eg 6513:  1'.2 x 0'.8:  Vis. 13.3; SB 13.1:  At first I could not find it.  I looked long and hard, before finally giving up.  I came back later in the night, then realized I had been looking at the wrong two guide stars.  As soon as I found the correct spot, there it was.  The galaxy was pretty big and bright at 136x.  It was very good to view at 187x, but fading somewhat at 250x.  At high power it is very oval, and still fair to view with averted vision.
http://www.ngcicproject.org

eg 6518:  0'.4 x 0'.4:  Vis. 13.9; SB 11.8:  This was an easy one!  It was located at 136x.  It lies south of a fairly bright star, and reminded me of a medium-sized planetary nebula.  At 187x views were good, with the galaxy being bright and very round.  At 250x a stellar core is noted, with a possible faint star on the preceding lip of the envelope.  The galaxy remains bright with averted vision.
http://www.ngcicproject.org

eg 6527:  1'.4 x 1':  Vis. 13.4; SB 13.6:  Located at 100x, south of a mag. 11 or mag. 12 star, just following a tiny, dim mini-cluster of stars.  150x shows a bright center.  Though pretty faint at 187x and 200x, the oval shape is noted, along with a brighter middle.
http://www.ngcicproject.org 

I am now five days away from the next two-week observing period.  I should have time to get Chart 67 up before then.  the rest will have to wait until the August session is completed.  By then, I should also be able to report on the deep sky objects of Scutum.  Until then, clear skies!
Mapman Mike

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