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Today's object NGC1514

Started by Inge_S, 01/13/2011 09:18AM
Posted 01/13/2011 09:18AM Opening Post
Some years ago I was a very active poster on this forum, but the last couple of years I haven't contributed much. One of the reasons is that I found it difficult to come up with new stuff, and just wanted to avoid repeating myself too much.

Realising that this hardly is a great problem, I decided now to start posting again, and to begin with I'll write short posts about some of my favourite objects on a regular basis. I'll not be able to do this every day, but hopefully quite frequently. Some posts will be under the deep-sky forum and some under the double and variable star forum. I'll normally write about objects that are well placed for observation from the northern hemisphere at the time of posting. But if I run out of objects I may present objects I have observed from the Canary Islands, and then I'll not bother about time of the year.

I shall usually refer to own observations done with my 12.5-inch Portaball (or smaller telescopes). I consider my observing capabilities as average meaning that whatever I claim to be able to see, most other people will also be able to see with similar (or often smaller) aperture under good conditions.

Today's choice is a planetary nebula in Taurus, NGC1514. In my opinion this object is more neglected than it deserves. To get a really good view of it with an instrument with average aperture a filter (O-III, UHC or equivalent) is required, but it isn't very difficult to spot it without a filter since the central star is very bright. First time I aimed my scope at the direction of the object I noticed that one of the stars of the field was surrounded by a haze almost as if some dew was present on the eyepiece. I had to apply the O-III filter to be a 100% sure that this was the object I was looking for. Using the filter I saw a beautiful, round nebula with delicate condensations. I would describe it as a crystal ball floating in space.

Some photos of this nebula displays a double ring superimposed on the nebula. These rings can obviously not be observed visually, and I don't know which wavelength has to be enhanced in order to produce these photos. Anyhow this is a very nice object, recommended to anyone. I assume it can be seen with considerably smaller aperture than my 12.5 inches.










Posted 01/13/2011 01:26PM #1
Hi Inge -- It's good to have you contributing again. Your object descriptions have always been excellent guides to viewing -- much appreciated.

Bob Polcyn
Posted 01/13/2011 06:55PM #2
Inge!
Welcome back. Great to read your posts again smile
-Magnus 57*N.
Posted 01/13/2011 11:20PM #3
Hi Inge!

Good to hear from you. The forum has been a little quiet in your absence!

I find 1514 not at all obvious in medium aperture--from a very dark site, in a 10-inch f/5.6, it did not declare itself in my 13mm eyepiece. The central star is the middle in a conspicuous row of three mag 9 stars, separated by about 16'. With the UHC filter, the planetary pops into view: a little cloud, oblong, and mottled.

My favorite recently-viewed PN is 1535, in Eridanus. Accepts a lot of power, showing great structure at 300X with an OIII in my 16-inch.


George Golitzin
Posted 01/15/2011 05:39PM #4
From a historical perspective, NGC 1514 was a pivotal object in the thinking of William Herschel. Up to that point he assumed all nebulous-looking objects were just distant unresolved star clusters or at least made up of stars. But something about the appearance of NGC 1514 caused him to reevaluate this point of view. Here's what he wrote in 1791 --

"A most singular phenomenon! A star of about 8th magnitude with a faint luminous atmosphere, of circular form, and about 3 minutes in diameter. The star is perfectly in the center and the atmosphere is so delicate, faint and equally throughout that there can be no surmise of its consisting of stars; nor can there be a doubt of the evident connection between the atmosphere and the star. Another star, not much less in brightness and in the same field as the above, was perfectly free from any such appearance."

Does anyone else find NGC 1514 unique?

--Steve