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RA: 04h 09m 16.9844s
Dec: +30° 46′ 33.471″
Ch: MSA:139, U2:95, SA:5
Type: planetary nebula
Mag: B=9.95, V=9.43
Discovered in 1790 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "a most singular phenomenon; a star 8th mag with a faint luminous atmosphere of a circular form, about 3' in diamater. The star is perfectly in the centre, and the atmosphere is so diluted, faint, and equal 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 with the above, was perfectly free from any such appearance."
The Earl of Rosse, observing with a 72-inch f/8.8 speculum telescope, recorded it 9 times, and noted "Sketched five times. Jan 13, 1852. New spiral of an annular form round the star, which is central. Brightest part is sf the star; spirality is vF, but I have no doubt of its existence. Oct 7, 1855. Annular, but with a break in south side of annulus, or perhaps the shape of the whole is conjectural; there is a star plain N.p. the nebula. Dec 7, 1857. Not vF, and the break in the south side of the ring of nebulosity quite easily seen; between this ring and the central star is not black, but filled with more faint nebulosity. Jan 9, 1858. Observed for a sketch; last observation correct as to shape; the brightest part is S.f. and the next brightest is on the opposite side, and with 0.5-inch single lens the whole annulus has a mottled look. Jan 13, 1858. The whole edge was ragged and irregular, and the whole neb much mottled."
Burnham, S. W. () "Measures of planetary nebulae with the 36-inch equatorial of the Lick Observatory", Pub. Lick Obs., vol 2, p159-167. The small star used for comparison is in, or near, the edge of the nebula. The diameter of the nebula is about 126 arcsec. The small star does not appear to have been noticed before. Herschel speaks of a 'faint star following' and in another observation 'star suspected n.p.' but no distance is given. In the drawing by Rosse (Phil.Trans. 1861) a small star is shown in the direction of 60° or 70° and distant about one diameter of the nebula from its edge. This nebulae is not described as planetary in Dreyer. Mr Barnard called my attention to it as probably belonging to the planetary class; and it certainly possesses the general characteristics. The surface, however, is not uniform, but broken and mottled.
Ced 28 (NGC 1514)
Position (1900): RA 4 3, Dec + 30 23
Star: 30 623 (Mp=9.7, V=9.0, SpT=O7)
Spectrum of nebula: emission spectrum (observed)
Classification: Neb associated with mainly one star (which may be multiple) - Quasi-planetary, representing a transitional type between real planetaries and bright diffuse nebulae (eg. NGC 1514)
Notes: "NGC 1514 = GC 810 = h 311 = H IV 69. Disc. 1790. (48, 93 Pl 5, 103, 114, 155, 216, 252, 366, 482, 486, 491, 592, 631, 715, 761, 762, 791). R. +30 623 = HD 26125. HD spectrum: K0! Has also been classified as a planetary"
The RNGC (Sulentic and Tifft 1973) notes that this is a planetary nebula.
Terzian Y (1980) Q.J. R.astr.Soc vol 21, p82-92 [09.16.1] notes that the central star of this planetary is a spectroscopic binary.
Marling, J.B. (1986) In pursuit of planetaries. Sky&Telescope, Jun, 631.
A spatiokinematic study of the planetary nebula NGC 1514. Astron.J., 126, 2963-2970.
"The planetary nebla NGC 1514 was identified as a double shell PN by Chu et al. (1987) from CCD images taken in H-alpha and [OIII] emission lines. Photographic images taken earlier by Kohoutek (1968) show two bright, nearly symmetric condensations present inside the nebula in the northwest and southeast directions. The central star of this nebula differs markedly from the other PN nuclei: it has high brightness (of visual magnitude 9.3) and shows a very late O-type spectrum. … Though the central star was suggested to be a close binary, there exists a considerable amount of discrepancy as to the nature of the binarity of the core and even the binarity itself.
"Our results indicate the morphology of NGC 1514 to be an ellipsoidal shell with bright blobs embedded inside along the polar axis. We proposed a formation scenario for this nebula as an outcome of common envelope binary progenitor. We argue that the formation of the CE elads to an ellipsoidal morphology and chemical deficiency by the termiantion of further chemical evolution for the low Galactic latitude nebula. From the theoretical considerations of CE evolution, we estimate the possible separation of the binary nuclei that suggests a binary period of 4 to 9 days, with an initial mass of the progenitor of about 4.5 M_solar."
Photo Index by Jim Lucyk: Sky&Tel. 5/70 p301, Sky&Tel. 6/86 p632, Sky&Tel. 12/69 p379, Deep Sky Monthly 9/80 p9, Burnhams V3 p1885, Observer's Guide (Astro Cards) 11-12/87 p25.
Rick Raasch writes in "The Focal Point", Volume 6, No. 3 (1993) "NGC 1514 A large, almost 2' in diameter, planetary nebula with a rather bright central star. This object exhibits the "blinking" effect rather well. That is, direct vision shows only the star well, but averted vision causes the fainter nebulosity to pop into view. Switching between the two causes the star to "blink" on and off."
Steve CoeSACNEWS On-Line for January 1996: "NGC 1514 is pretty bright, pretty large, round with a central star of about 10th mag, the star is obvious in the 13" at 150X without a filter. Going to 220X and putting in the UHC filter makes a big difference in the view of this object. There are several dark markings and I noticed that the nebulosity does not touch the central star. This nice planetary nebula convinced William Herschel that there are truly nebulous objects in the sky. Until that observation, it was generally believed that all the fuzzy objects were just compressed clusters of many faint stars. Herschel called it ``a star with an atmosphere'' see for yourself at 4 hr 9.2 min and +30 47."
(PK165-15.1) Mag=10.9. Taurus: 4h, 9.2m; +30° 47' A moderate-sized planetary somewhat over 2 arcminutes in diameter. Ferguson finds it an 'excellent' object, even with a Questar in Houston! In the Santa Cruz mountains with an 8" scope, it is very easily seen around a 9th magnitude star: a faint, irregular disk at magnifications of 80 to 200X with an oxygen-line filter. Detectable without the filter, but much better with it! Heber Curtis drew it in 1918, based on photographs he made with the Lick Crossley reflector: the detail of Curtis' rendition was not evident with a mere 8" scope. Observed in a sky bright with light pollution, but blessed with excellent transparency and steady seeing. Worth the effort of searching!
Your skills: Intermediate (some years) Date/time of observation: 1999/10/11 05:25 UT Location of site: ASH Naylor Observatory, Lewisberry, PA (Lat 40.15 d N, 76.9 d W, Elev 190 meters) Site classification: Exurban Sky darkness: 5.0 Limiting magnitude Seeing: 5 1-10 Seeing Scale (10 best) Moon presence: None - moon not in sky Instrument: 17" f/15 classical Cassegrain equatorial mount Magnification: 118, 144, 202, and 259x Filter(s): Orion UltraBlock and Lumicon O-III Object(s): NGC 1514 Category: Planetary nebula. Class: type 3+2 Constellation: Taurus Data: mag 10.9p size 120"x90" Position: RA 04h:09.2' DEC +30d:47'
Description: NGC 1514 is a large planetary nebula that has an unusually bright central star of magnitude 9.4. It is located between two ninth magnitude field stars, the southern one being distinctly red in color. The nebulosity was subtle and is described in _The Night Sky Observer's Guide_ as having a dumbbell shape similar to M27 but to me it appeared roughly annular. Under mediocre conditions said nebulosity was visible with averted vision at 118, 144, and 202x without a nebula filter but I felt the best view was at 118x using an Orion UltraBlock filter. The view was too dark with a Lumicon O-III filter at 202x and unfiltered at 259x. --
Hi Doug.......viewed 1514 with the 36" tonight, without filters. The inner structure is laced with semi-circular bands and the outer shell does seem to have a distictive end to it. Probably of interest, is that the central star appears to have another very close neighbor to it....probably just a field star, but difficult to pick up due to the brightness of the central star. I just looked at an image of 1514 and it shows this near star to actually be two (the second being even fainter). I didn't notice two, but will view it again on another night to see if I can detect it. Also, one fairly bright field star is very near the edge of the shell. I would imagine that the semi-circular structures would really stand out in the 36". using filters and will try that on another night. Unfortunately, my daytime second job forces me to get some sleep. Neal
Under mediocre conditions I managed to do a little observing on Tuesday night from the ASH Naylor Observatory. Since NGC 1514 has been discussed recently on sci.astro.amateur I decided to take a look at it.
Date: 11/10/99 UT ; Conditions: Seeing: 5/10, Transparency: 5/10, Limiting Magnitude: ~5.0 ; Location: ASH Naylor Observatory located 2 miles northwest of; Lewisberry, PA ; Telescopes: 5" f/5 finderscope, 17" f/15 equatorially mounted classical ; Cassegrain ; Oculars (17"): 55mm University Optics Ploessl (118x), 45mm U.O. Ploessl; (144x), 32mm U.O. Koenig-II (202x), 25mm U.O. MK-70 (259x) ;
NGC 1514 is a large, type 3+2 planetary nebula which spans 120"x90" and shines at magnitude 10.9p. It has an unusually bright central star of magnitude 9.4 and is located between two ninth magnitude field stars, the southern one being noticeably red in color. The nebulosity was subtle and is described in _The Night Sky Observer's Guide_ as having a dumbbell shape similar to M27 but to me it appeared roughly annular. Said nebulosity was visible with averted vision at 118, 144, and 202x without a nebula filter but I felt the best view was at 118x using an Orion UltraBlock filter. The view was too dark with a Lumicon O-III filter at 202x and unfiltered at 259x.
I've seen the "dumbbell" shape to NGC 1514 using moderate power with the OIII. One side is brighter than the other too. Can't remember which one without my notes, but an interesting morphology visible with filters. Gordon
I have never really seen much of a dumbell shape with this object. When I first ran into it with an 8 inch Newtonian, it appeared as a diffuse roughly circular ball of dim haze around a faint star. The UHC filter tended to make the northwest and southeastern sides seem a bit brighter. I would estimate its diameter as around 2.5 arc minutes. With my 10 inch and the OIII, the northwest and southeastern sides become arc-like, as if a spindle-shaped dark lane goes down from the northeast straight through the central star and exits out the southwestern side. The central star seemed surrounded by a dark ring, and at 101x with the OIII, the arcs on the northwest and southeast sides seem a bit irregular. I like the OIII most at low to moderate powers (under 120x), and the UHC at higher ones. In my Nebula/Filter rating project, on NGC 1514, the OIII ranks just a tad better than the UHC, although the object is a bit brighter in the UHC. Clear skies to you. -- David Knisely KA0CZC@navix.net ------------------------------------------------------------------------
Using the 17" classical Cassegrain at 118x with the Orion UltraBlock under light polluted skies produced a view similar to what you saw with your 8", UHC filter, and dark skies. Unfortunately, ASH owns only a 1.25" O-III filter and the lowest magnification that I could use it with was 202x (1.25" 32mm Koenig-II). I'll have to try NGC 1514 again at lower magnifications using an O-III filter and the ASH 12.5" f/6.5 Cave Newtonian or my friend's 15" f/4.5 Obsession sometime soon.
04 09.3 +30 47
17.5: very bright, large, round, 2' diameter. Contains a very bright mag 9.5 central star surrounded by a fairly bright halo with an irregular surface brightness. Located between mag 8.3 SAO 57017 8' NNW and mag 9 SAO 57021 8' S.
13: bright, fairly large, round, dominated by mag 9.5 central star.
Donald J. Ware:"A large, almost 2' in diameter, planetary nebula with a rather bright central star. This object exhibits the"blinking" effect rather well. That is, direct vision shows only the star well, but averted vision causes the fainter nebulosity to pop into view. Switching between the two causes the star to"blink" on and off."
Tom Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "10M; 2' diameter; large and faint with 10M center star; N-filter helps a lot."
I like to call NGC 1514, "The Crystal Ball Nebula", as it reminds me a bit of one, especially when using a filter. I almost never leave a filter out when observing it, and I love the arc-like detail visible when the UHC or OIII filters are used. I don't really see a distinctly separate outer shell in my ten inch, just diffuse irregularities in the outer boundary of the "ball". The striking dark irregular inner detail once reminded me a bit of the way M64 looks at low power when I first looked at the planetary. Now, I just call it the Crystal Ball and leave it at that. This one is good in the UHC and dimmer but a bit better in the OIII, with slightly higher contrast. One thing the OIII does is help reduce the brightness of the central star, and that has helped on several planetaries like NGC 2392. Another object which shows similar light and dark detail is NGC 7008, another favorite of mine. Clear skies to you. -- David Knisely KA0CZC@navix.net Prairie Astronomy Club, Inc. http://www.4w.com/pac
Observer: Mark G.Birkmann Your skills: Intermediate (some years) Date/time of observation: 11-6-99 8:30 UT (2:30 am CST) Location of site: New Haven, Missouri (Lat ~38, Elev ~700') Site classification: Rural Sky darkness: 5 1-10 Scale (10 best) Seeing: 5 1-10 Seeing Scale (10 best) Moon presence: None - moon not in sky Instrument: 40" f/5 dob Magnification: lowest power 125x Filter(s): OIII, H-beta, Orion Ultrablock Object(s): NGC 1514 Category: Planetary nebula. Class: 3 + 2 Constellation: Taurus Data: mag 10.0 size 1.9' central star mag. 9.4 Position: RA 04h:09m 17s DEC +30 :46' 33"
Description: This pn was fairly faint but responded very well to the Ultrablock filter. My first impression with the filter in place was that this pn was almost square rather than round. The central star was bright. The central area of nebulousity was slightly dimmer than the outer bright ring. The outer ring formed two arcs one of which went about half way around the nebula and the other of which went about one third of the way around. On the side where the arcs had the greatest separation the edges of the arcs were clearly concave. Part of the central, inner, edge of the smaller arc also had a concave area. Faint wisps of nebulousity extended off of each of the bright arcs helping to give this nebula its squarish shape. A very faint star was seen immediately off the edge of the larger arc. A drawing can be seen at http://www.fortunecity.com/greenfield/twyford/637/drawings.planetaries.htm
[amastro] posting, Sat Nov 25, 2006
82" telescope, McDonald Observatory near Fort Davis, Texas, USA
f/13.7, 35mm Televue Panoptic (5' fov, 812x)
This PNe had a very large halo, not perfectly round and with a lumpy- bumpy outer edge. The interior of the disk is almost completely filled with a 4-lobed shamrock-shaped dark area. The central star was obvious. Curiously, this was the only PNe of the weekend that responded to the OIII filter, all the others simply looked about the same. Very unique.
NGC: 1514 - Taurus
RA: 04h09m17.7 - DEC: +30o46'33"
Magnitude: 10 – Size: 1.9'
Tel: 12" S/C – 218x – 346x - Date: 31 Jan 2008 – Site: Alldays - good
Surrounded by a few 8 magnitude stars it displays a beautiful round haze around the easy seen middel 10 magnitude star. The edge fade out into the dark of the star field, but stand out well as a whole object. The 0111 filter brings out the glow which display not a very round figure any more, with an uneven surface appearance. Very busy star field.
Instrument:12-inch Dobsonian Reflector Telescope.
Sky Conditions:The fainter parts of the Milky Way are barely visible with the naked eye.
Transparency Of The Sky:Haziness only visible on the horizon.
Seeing:Atmosphere stable with little interference.
Object Type:Planetary Nebula.
First Impression:This object looks like a planetary nebula.
Chart Number:No.3(Extract taken out of "Atlas of the Night Sky").
Size:9mm Eyepiece:Field Of View:15'/3= 5'.
7mm Eyepiece:Field Of View:15'/2.5= 6'.
5'+ 6'= 11'.
Size in Arc Minutes:5.5'.
Planetary Nebula is 5.5'* 1.8'.
Brightness Profile:From the central outskirts of this planetary nebula the nucleus grows brighter in the middle.
Challenge Rating:Very Difficult.
This planetary nebula's large round diffuse and faint shape is however observed with an OIII filter at both 167* and 214*.This nebula is lit up by a 9th magnitude star in the center whereby this nebula is well defined and has a pale-white structure in appearance.
Observing site: Little Tycho Observatory
[4h 9m 12s, 30° 47m 0s] A very low contrast smudge about a 9th mv K star.
Observing site: Little Tycho Observatory
[4h 9m 12s, 30° 47m 0s] This faint planetary is washed out to the point of invisibility in these light polluted skies.
Location: Paardeberg (ASSA Cape Centre dark sky site)[33:34.4S, 18:51.3E]
Time: 20:45 SAST
Binocs: 15x70 Celestron
A faint, stellar spot, neatly positioned between two 8th magnitude stars.
The Messier objects
The Bennett objects
The Caldwell list
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