NOVEMBER 2019 OBSERVERS CHALLENGE – NGC-246

The complete Observer’s Challenge report link as following: 

OCTOBER 2019 OBSERVERS CHALLENGE – NGC-7448_

My first observation of galaxy NGC 7448, came on the night of October 24, 1994, using a 10-inch reflector.   Roger Ivester 

October 24th 1994: 

“10-inch @ 57x, can vaguely detect with direct vision, situated between two two dim stars, which are oriented ESE-NW of the galaxy.  When increasing the magnification to 190x, the galaxy appeared elongated, still fairly difficult, but could be seen with direct vision.  However, averted vision allowed a clear view of the elongated shape, oriented N-S, with a brighter stellar core.” 

It would be almost twenty five years before I would observe this galaxy again, on September 26th, 2019.  

An astronomy friend, Richard Nugent from Massachusetts, visited both my wife Debbie and I, and were fortunate to be able to observe the galaxy that night.  We estimated the NELM at about 5.0, which is actually pretty good for my back yard this time of the year in the foothills of North Carolina. 

Using a 10-inch reflector, the galaxy was fairly easy to see with direct vision, at 114x.  When increasing the magnification to 174x, using a 12.5 mm eyepiece and a 1.9x Barlow, the galaxy appeared elongated and oriented N-S, with a brighter core.   

However, for a faint galaxy such as this, and using a 10-inch reflector in a moderate-plus light polluted location….just being able to recognize and see a few minor details can be an accomplishment or considered a success.  

I was pleased to be able to see the very faint double star, magnitudes, 13.5 and 14.0 located to the NNW of the galaxy.   (Magnitudes from NOMAD, and provided by special advisor to the Observer’s Challenge, Sue French)  

The double is actually a triple, but the third component is very faint at magnitude 15.7, which is far too faint for my 10-inch reflector.  I’m hoping that others using much larger telescopes were able to see this third star.  

Roger Ivester 

Pencil sketch:  10-inch reflector @ 174x 

Notes and pencil sketch by Sue French:

NGC 7448 is the brightest of five NGC galaxies that mark the corners of a nearly equilateral triangle with 28′-long sides. It sits at the triangle’s western corner. I first logged NGC 7448 in 1988 for the Astronomical League’s Herschel 400 observing program. Since then I’ve visited it a number of times, along with its buddies, through a few different scopes. My Observer’s Challenge sketch was done with my 254/1494mm (10-inch f/5.8) reflector at magnifications of 187× to 299×.

NGC 7448 appears fairly bright and elongated at 68×, with a 10th-magnitude star in attendance 2½′ east by south of the galaxy. At 115× NGC 7448 presents a moderate-size oval glow, twice as long as wide, that grows gently brighter toward the center. At 187× the galaxy shows a south-by-east tilt. Its large, elongated core looks brighter in the north. At 213× I estimate a size of about 1.7′ × 0.8′.

NGC 7465 shares the field of view with NGC 7448 at 68×, but it’s dimmer and roundish with a tiny, bright center. The galaxy sits 4′ east of an 8th-magnitude star and is tucked inside the western corner of a ¼° trapezoid formed by that star and three others, magnitudes 9 and 7. At 115× the small glow of the galaxy is easily viewed. Its core is tipped NNW and harbors a tiny bright nucleus. At magnifications of 187× to 299×, the core grows brighter toward a stellar nucleus and the faint halo is just a thin coating of fluff that slightly rounds out the galaxy’s profile.

NGC 7463 emerges as an east-west glow at 115×, dwelling just 2½′ WNW of NGC 7465. At 213× it shyly offers an elusive stellar nucleus and has a very elongated façade. At 299× NGC 7463 maintains an almost uniform surface brightness.

NGC 7464 is a tiny little thing dangling south of the eastern half of NGC 7563. I was only able to spot it during one of my observing sessions. With averted vision at 299×, I could catch repeated glimpses of the galaxy as a round dot. It was difficult to see, and I couldn’t hold it steadily in view.

Together NGC 7463, NGC 7464, and NGC 7465 hold down the western corner of the galaxy-pinned triangle. 

NGC 7454 is parked on the triangle’s northern point and is visible even at 43× as a tiny smudge off the ESE side of a 11½-magnitude star. A 9th-magnitude star lies 4½′ east by north. The galaxy is faint and somewhat oval at 68×, and 115× reveals a relatively large, bright, oval core. In addition to the 11½-magnitude star near the galaxy’s WNW side, the higher power captures a 13½′-magnitude star a little farther away to the NNW. NGC 7454 grows gently brighter toward the center at 187×, and at 213× I estimate the visible size as about 1′ × ⅔′.

I’d hoped all the galaxies would fit in my 187×, 32′ field of view, but that wasn’t big enough, so I cheated and nudged the scope north to get NGC 7454. I also used higher magnifications to add some of the details. Sketching stars, I began with those near the galaxies and brighter field stars. For three nights it kept clouded up before I could try to get the rest, so I decided leave the sketch as is. North is to the left and west is up. 

SEPTEMBER 2019 OBSERVERS CHALLENGE – M-071

6-inch reflector:  Pencil sketch, using a blank 5 x 8 notecard, with the colors inverted.  Roger Ivester

Complete report: AUGUST 2019 OBSERVERS CHALLENGE – M-011-1

Observer’s Challenge Report:

JUNE 2019 OBSERVERS CHALLENGE – NGC-5377

Pencil sketch:  10-inch reflector @ 160x 

Observer’s Challenge Report:  JULY 2019 OBSERVERS CHALLENGE – NGC-6482

In an attempt to observe the July Observer’s Challenge object, galaxy NGC 6482, a bit early to avoid the heat and high humidity of June and most of the summer months, here in the foothills of North Carolina:  

Telescope: 10-inch f/4.5 reflector.  I went out last night at about 2:00 AM (May 30th) only to find a not so transparent sky, with a NELM of about 4.6, temperature 55º and with 99% humidity.  The high moisture mixed with high-pollen created a bright sky for sure!

However, while outside, I thought I’d make the best of it and give the galaxy a try.  At 2:00 AM the object was still too low in the east, but I wanted to find the “spot” and work on the object.  At about 3:30 it was high enough to get serious.  

At 5:00 AM, I called it quits, as the sky was beginning to brighten.  This might be a difficult object from my backyard with a 10-inch reflector.

On a better night in June.  Pencil sketch with the colors inverted.  Roger Ivester

NGC 6482:  Observation Notes and Sketch by Sue French:

I  took a look at NGC 6482 on Friday, May 24 at 12am EDT with my 254/1494mm (10-inch f/5.8) Newtonian.  The seeing was below average, and the transparency was fair.

At 43× NGC 6482 is just a little fuzzball.  It dangles beneath (south of) the base of a slender, 6.3′-tall trapezoid made by four 11th-magnitude stars.  At 115× the galaxy presents an oval glow tipped northeast by east and sports a superimposed star near the galaxy’s center. 

The sketch was made at 187×, at which this petite galaxy wears a fainter fringe and appears roughly 0.7′ long.  The galaxy showed no core, and I’ll be interested in finding out whether anybody else spotted one. 

Perhaps the proximity of the superimposed star hid the core, or maybe one would show if viewed higher in the sky.  It was about 52° above the horizon when I observed it.   Sue French 

Observer’s Challenge Report:

APRIL 2019 OBSERVERS CHALLENGE – NGC-2964-68

Pencil sketch with colors inverted:

March Observer’s Challenge Complete Report:  Click on the following link:

MARCH 2019 OBSERVERS CHALLENGE – NGC-2300

Inverted color pencil sketch: