Caldwell Catalogue2020-04-07T21:29:19+00:00

Another project to capture as many Caldwell objects as possible. Many of the later ones (60+) are southern hemisphere objects so it is unlikely I will get them here – at least not without some travel.

“The Caldwell Catalogue is an astronomical catalog of 109 bright star clusters, nebulae, and galaxies for observation by amateur astronomers. The list was compiled by Sir Patrick Caldwell-Moore, better known as Patrick Moore, as a complement to the Messier Catalogue.”
Wikipedia
View all Caldwell objects

C#NGC/ICCon.TypeMag.Size ()Description
1188CepOC8.114
240CepPN11.60.6
34236DraSbG9.721 x 7
47023CepBN6.818 x 18Reflection Nebula
5IC 342CamSBcG9.218 x 17
66543DraPN8.80.3/5.8Cat’s Eye Nebula
72403CamScG8.918 x 10
8559CasOC9.54
9Sh2-155CepBN7.750 x 10Cave Nebula
10663CasOC7.116
117635CasBN7.015 x 8Bubble Nebula
126946CepScG9.711 x 9
13457CasOC6.413Phi Cas Cluster
14869/
884
PerOC double4.330 and 30Sword Handle
156826CygPN9.80.5/2.3Blinking Nebula
167243LacOC6.421
17147CasdE4G9.313 x 8
18185CasdE0G9.212 x 9
19IC 5146CygBN10.012 x 12Cocoon Neb
207000CygBN6.0120 x 100North American Nebula
214449CVnIG9.45 x 3
227662AndPN9.20.3/2.2
23891AndSbG9.914 x 2
241275PerSeyfert G11.62.6 x 1Per A radio source
252419LynGC10.44.1
264244CVnSG10.616 x 2.5
276888CygBN7.520 x 10Crescent Nebula
28752AndOC5.750
295005CVnSbG9.85.4 x 2
307331PegSbG9.511 x 4
31IC 405AurBN6.030 x 19Flaming Star Nebula
324631CVnScG9.315 x 3
336992/5CygSN60 x 8East Veil Nebula
346960CygSN70 x 6West Veil Nebula
354889ComE4G11.43 x 2Brightest in cluster
364559ComScG9.810 x 4
376885VulOC5.77
384565ComSbG9.616 x 3
392392GemPN9.90.2/0.7Eskimo Nebula
403626LeoSbG10.93 x 2
41TauOC1.0330Hyades
427006DelGC10.62.8Very distant globular
437814PegSbG10.56 x 2
447479PegSBbG11.04 x 3
455248BooScG10.26 x 4
462261MonBN10.02 x 1Hubble’s Variable Neb.
476934DelGC8.95.9
482775CanSaG10.34.5 x 3
492237-9MonBN80 x 60Rosette Nebula
502244MonOC4.824
51IC 1613CetIG9.012 x 11
524697VirE4G9.36 x 3
533115SexE6G9.18 x 3Spindle Galaxy
542506MonOC7.67
557009AqrPN8.32.5/1Saturn Nebula
56246CetPN8.03.8
576822SgrIG9.310 x 9Barnard’s Galaxy
582360CMaOC7.213
593242HyaPN8.60.3/21Ghost of Jupiter
604038CrvScG11.32.6 x 1.8The Antennae
614039CrvScG13.03.2 x 2.2The Antennae
62247CetSG8.920 x 7
637293AqrPN6.513Helix Nebula
642362CMaOC4.18Tau CMa Cluster
65253SclSG7.125 x 7Sculptor Galaxy
665694HyaGC10.23.6
671097ForSBbG9.29 x 6
686729CrABN9.71.0R CrA Nebula
696302ScoPN12.80.8Bug Nebula
70300SclSdG8.120 x 13
712477PupOC5.827
7255SclSBG8.232 x 6Brightest in Scl Cluster
731851ColGC7.311
743132VelPN8.20.8
756124ScoOC5.829
766231ScoOC2.615
775128CenPeculiar Galaxy7.018 x 14Cen A radio source
786541CrAGC6.613
793201VelGC6.718
805139CenGC3.636Omega Centauri
816352AraGC8.17
826193AraOC5.215
834945CenSBcG9.520 x 4
845286CenGC7.69
85IC 2391VelOC2.550o (Omicron) Vel Cluster
866397AraGC5.626
871261HorGC8.47
885823CirOC7.910
896087NorOC5.412S Nor Cluster
902867CarPN9.70.2
913532CarOC3.055
923372CarBN6.2120 x 120Eta Carinae Nebula
936752PavGC5.420
944755CruOC4.210Jewel Box Cluster
956025TrAOC5.112
962516CarOC3.830
973766CenOC5.312
984609CruOC6.95
99CruDN400 x 300Coal Sack
100IC 2944CenOC4.515– (Lambda) Cen Cluster
1016744PavSBbG9.016 x 10
102IC 2602CarOC1.950÷ (Theta) Car Cluster
1032070DorBN1.040 x 25Tarantula Neb. in LMC
104362TucGC6.613
1054833MusGC7.314
106104TucGC4.03147 Tucanae
1076101ApsGC9.311
1084372MusGC7.819
1093195ChaPN0.6

BN = Bright nebula
GC = Globular cluster
OC = Open cluster
EG = Elliptical (type) galaxy
DN = Dark nebula
IG = Irregular galaxy
PN = Planetary nebula
SN = Supernova remnant
SG = Spiral (type) galaxy

Double Cluster NGC 869 and NGC 884 / C14

Revisiting an old friend. Two rich open clusters at similar distances from us of 7,500 light years.

Object IDDouble Cluster NGC 869 and NGC 884 / C14
DetailsOpen Clusters
Perseus
2021-11-12
Telescope250mm f4.8 Newtonian
MPCC
IDAS D3
CameraQHY168C @-15°C
Exposure(s)20x180s
d,f,b
CaptureNINA
ProcessingAPP, Photoshop
16 November 2021|Caldwell, News, NGC Autumn, Open Cluster|

Galaxies Galore – Stephan’s Quintet and NGC 7331/C30

Stephan’s Quintet is to the left, consisting of 4 related galaxies and NGC 7320 which is a foreground galaxy. Their brightness’s range from +14.6 to +15.7.
NGC 7318B is colliding with gas in the group, producing a huge shock wave bigger than the Milky Way, spreading through the medium between the galaxies, heating the gas to millions of degrees, emitting X-rays.
A sixth galaxy, NGC 7320C appears to be connected by a tidal tail (just visible) to NGC 7319.

NGC 7331 or Caldwell 30 (to the right) is similar in size and structure to the Milky Way, 40M light years away. A discovery by William Herschel in 1784. It is the main body in the NGC 7331 Group, which contains unbarred spirals NGC 7335 and 7336, the barred spiral galaxy NGC 7337 and the elliptical galaxy NGC 7340. These other galaxies are all much further away (~300M ly), so not related to NGC 7331.

Object IDStephan’s Quintet and NGC 7331/C30
DetailsGalaxy Cluster
Pegasus
2021-11-03
Telescope250mm f4.8 Newtonian
MPCC
IDAS D3
CameraQHY168C @-15°C
Exposure(s)15x180s
d,f,b
CaptureNINA
ProcessingAPP, Photoshop
10 November 2021|Caldwell, Galaxy, News, NGC Autumn|

NGC 752 / C28 Open Cluster

Looks ordinary but lots of interest in there if you dig a bit deeper – obviously not all associated with the cluster but just in the fov. Includes a fair number of galaxies, spectroscopic binaries, X ray sources, galaxy groups, radio sources, ir sources, stars with high proper motions. The cluster itself contains about 258 stars, mostly low mass in the main sequence or red giant stage. About 1300 ly away and just on the edge of naked eye visibility at mag. 5.7.

Object IDNGC 752 / C28
DetailsOpen Cluster
Andromeda
Mag.5.7
Size 75′
2021-11-01
Telescope250mm f4.8 Newtonian
MPCC
IDAS D3
CameraQHY168C @-15°C
Exposure(s)10x180s
d,f,b
CaptureNINA
ProcessingAPP, Photoshop
10 November 2021|Caldwell, News, NGC Autumn, Open Cluster|

C3 NGC 4236

Added more data to this one but still very tricky. More horrible gradients to deal with. The IDAS P2 LP filter is no longer doing it’s job with the change in LP sources round here. Have now bought the IDAS D3 to see if that is any better as it deals more with LED lighting.

Object IDC3 NGC 4236
Draco
DetailsMag. 10.5
Size 121′.9 × 7′.2
2021-04-12
Telescope250mm f4.8 Newtonian
MPCC
CameraQHY168C @-15°C
IDAS P2
Exposure(s)20x180s, 25x300s
10/50 gain/offset
darks, flats, bias
CaptureNINA
ProcessingAPP, Photoshop, Topaz DeNoise AI
14 April 2021|Caldwell, Galaxy, News|

C5 The Hidden Galaxy

Another  go a this for the ASE Caldwell Project. A really tricky one this. Hidden in the dust from our own galaxy, this would actually be naked eye brightness if not obscured. From two sets of data but still challenging.

Object IDC4 NGC7023 Iris Nebula
DetailsMag. 9.1
Size 21.4′ x 20.9′
2021-04-11
Telescope250mm f4.8 Newtonian, MPCC
CameraQHY168C @-15°C
IDAS P2
Exposure(s)25 x 240s, 14x180s
darks, flats, bias
CaptureNINA
ProcessingAPP, Photoshop, Topaz Denoise AI
14 April 2021|Caldwell, Galaxy, News|