Caldwell Catalogue

/Caldwell Catalogue
Caldwell Catalogue2018-09-22T12:43:47+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/IC Con. Type Mag. Size () Description
1 188 Cep OC 8.1 14
2 40 Cep PN 11.6 0.6
3 4236 Dra SbG 9.7 21 x 7
4 7023 Cep BN 6.8 18 x 18 Reflection Nebula
5 IC 342 Cam SBcG 9.2 18 x 17
6 6543 Dra PN 8.8 0.3/5.8 Cat’s Eye Nebula
7 2403 Cam ScG 8.9 18 x 10
8 559 Cas OC 9.5 4
9 Sh2-155 Cep BN 7.7 50 x 10 Cave Nebula
10 663 Cas OC 7.1 16
11 7635 Cas BN 7.0 15 x 8 Bubble Nebula
12 6946 Cep ScG 9.7 11 x 9
13 457 Cas OC 6.4 13 Phi Cas Cluster
14 869/
884
Per OC double 4.3 30 and 30 Sword Handle
15 6826 Cyg PN 9.8 0.5/2.3 Blinking Nebula
16 7243 Lac OC 6.4 21
17 147 Cas dE4G 9.3 13 x 8
18 185 Cas dE0G 9.2 12 x 9
19 IC 5146 Cyg BN 10.0 12 x 12 Cocoon Neb
20 7000 Cyg BN 6.0 120 x 100 Nort American Nebula
21 4449 CVn IG 9.4 5 x 3
22 7662 And PN 9.2 0.3/2.2
23 891 And SbG 9.9 14 x 2
24 1275 Per Seyfert G 11.6 2.6 x 1 Per A radio source
25 2419 Lyn GC 10.4 4.1
26 4244 CVn SG 10.6 16 x 2.5
27 6888 Cyg BN 7.5 20 x 10 Crescent Nebula
28 752 And OC 5.7 50
29 5005 CVn SbG 9.8 5.4 x 2
30 7331 Peg SbG 9.5 11 x 4
31 IC 405 Aur BN 6.0 30 x 19 Flaming Star Nebula
32 4631 CVn ScG 9.3 15 x 3
33 6992/5 Cyg SN 60 x 8 East Veil Nebula
34 6960 Cyg SN 70 x 6 West Veil Nebula
35 4889 Com E4G 11.4 3 x 2 Brightest in cluster
36 4559 Com ScG 9.8 10 x 4
37 6885 Vul OC 5.7 7
38 4565 Com SbG 9.6 16 x 3
39 2392 Gem PN 9.9 0.2/0.7 Eskimo Nebula
40 3626 Leo SbG 10.9 3 x 2
41 Tau OC 1.0 330 Hyades
42 7006 Del GC 10.6 2.8 Very distant globular
43 7814 Peg SbG 10.5 6 x 2
44 7479 Peg SBbG 11.0 4 x 3
45 5248 Boo ScG 10.2 6 x 4
46 2261 Mon BN 10.0 2 x 1 Hubble’s Variable Neb.
47 6934 Del GC 8.9 5.9
48 2775 Can SaG 10.3 4.5 x 3
49 2237-9 Mon BN 80 x 60 Rosette Nebula
50 2244 Mon OC 4.8 24
51 IC 1613 Cet IG 9.0 12 x 11
52 4697 Vir E4G 9.3 6 x 3
53 3115 Sex E6G 9.1 8 x 3 Spindle Galaxy
54 2506 Mon OC 7.6 7
55 7009 Aqr PN 8.3 2.5/1 Saturn Nebula
56 246 Cet PN 8.0 3.8
57 6822 Sgr IG 9.3 10 x 9 Barnard’s Galaxy
58 2360 CMa OC 7.2 13
59 3242 Hya PN 8.6 0.3/21 Ghost of Jupiter
60 4038 Crv ScG 11.3 2.6 x 1.8 The Antennae
61 4039 Crv ScG 13.0 3.2 x 2.2 The Antennae
62 247 Cet SG 8.9 20 x 7
63 7293 Aqr PN 6.5 13 Helix Nebula
64 2362 CMa OC 4.1 8 Tau CMa Cluster
65 253 Scl SG 7.1 25 x 7 Sculptor Galaxy
66 5694 Hya GC 10.2 3.6
67 1097 For SBbG 9.2 9 x 6
68 6729 CrA BN 9.7 1.0 R CrA Nebula
69 6302 Sco PN 12.8 0.8 Bug Nebula
70 300 Scl SdG 8.1 20 x 13
71 2477 Pup OC 5.8 27
72 55 Scl SBG 8.2 32 x 6 Brightest in Scl Cluster
73 1851 Col GC 7.3 11
74 3132 Vel PN 8.2 0.8
75 6124 Sco OC 5.8 29
76 6231 Sco OC 2.6 15
77 5128 Cen Peculiar Galaxy 7.0 18 x 14 Cen A radio source
78 6541 CrA GC 6.6 13
79 3201 Vel GC 6.7 18
80 5139 Cen GC 3.6 36 Omega Centauri
81 6352 Ara GC 8.1 7
82 6193 Ara OC 5.2 15
83 4945 Cen SBcG 9.5 20 x 4
84 5286 Cen GC 7.6 9
85 IC 2391 Vel OC 2.5 50 o (Omicron) Vel Cluster
86 6397 Ara GC 5.6 26
87 1261 Hor GC 8.4 7
88 5823 Cir OC 7.9 10
89 6087 Nor OC 5.4 12 S Nor Cluster
90 2867 Car PN 9.7 0.2
91 3532 Car OC 3.0 55
92 3372 Car BN 6.2 120 x 120 Eta Carinae Nebula
93 6752 Pav GC 5.4 20
94 4755 Cru OC 4.2 10 Jewel Box Cluster
95 6025 TrA OC 5.1 12
96 2516 Car OC 3.8 30
97 3766 Cen OC 5.3 12
98 4609 Cru OC 6.9 5
99 Cru DN 400 x 300 Coal Sack
100 IC 2944 Cen OC 4.5 15 – (Lambda) Cen Cluster
101 6744 Pav SBbG 9.0 16 x 10
102 IC 2602 Car OC 1.9 50 รท (Theta) Car Cluster
103 2070 Dor BN 1.0 40 x 25 Tarantula Neb. in LMC
104 362 Tuc GC 6.6 13
105 4833 Mus GC 7.3 14
106 104 Tuc GC 4.0 31 47 Tucanae
107 6101 Aps GC 9.3 11
108 4372 Mus GC 7.8 19
109 3195 Cha PN 0.6

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

Cygnus Wall NGC 700 (Caldwell 20)

Part of the North America nebula – the Central America part – seems to be known as the Cygnus Wall. Can only fit a small part of this object in my FOV.

Object ID NGC 7000, C20
Details Mag. 4
Size: 120′ x 100′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX, Baader filters
-15C
Exposure(s) 10x300s ea in Ha and OIII
Capture APT
Processing APP, Photoshop
Mapped HOO and moved to the blue end
21 September 2019|Caldwell, Narrowband, Nebula, News, NGC Summer|

Cave Nebula Sh2-155 / Caldwell 9

Sh2-155 is a diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. It is widely known as the Cave Nebula. Sh2 designation because it’s part of the Sharpless Catalog (1959) of 312 HII regions. About 2400 light years from Earth and a stellar nursery.

Narrowband filters really do cut through the murky, light polluted skies of Edinburgh so well. Obviously false colour, has to be for narrowband, but can’t decide which is the best so two different tone mappings: SII Ha OIII -> RGB and Ha OIII SII

Object ID Cave Nebula
Sh2-155 / C9
Details Cepheus
Mag. 7.7, 50′ x 30′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
Exposure(s) 10 x 180s each Ha OIII SII 2×2
Capture APT
Processing DSS, Nebulosity, Photoshop
9 September 2019|Caldwell, Narrowband, Nebula, News, NGC Summer|

Iris Nebula NGC 7023 / Caldwell 4

Been meaning to do this one for ages. Not easy because the background gas and dust can be easily lost in the light pollution and noise.

“The Iris Nebula, also known as NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +6.8 star, SAO 19158.”
Wikipedia

Object ID Iris Nebula
NGC 7023 / C4
Details Cepheus
Mag. 6.8, 18′ x 18′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
Exposure(s) 10 x 180s each RGB 1×1
Capture APT
Processing Nebulosity, Photoshop
29 August 2019|Caldwell, Nebula, News, NGC Summer|

Cocoon nebula IC5146 / Caldwell 19 RGB

“IC 5146 (also Caldwell 19, Sh 2-125, and the Cocoon Nebula) is a reflection/emission nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula.”
Wikipedia

Object ID Cocoon Nebula
IC 5146 / C19
Details Cygnus
Mag. 7.2, 12′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
Exposure(s) 9 or 10 x 180s each RGB 1×1
Capture APT
Processing Nebulosity, Photoshop
28 August 2019|Caldwell, Nebula, News, NGC Summer|

NGC 6888 / Caldwell 27 Crescent Nebula SHO

A new one for me

Object ID NGC 6888
Crescent Nebula
Details Cygnus
Mag. 7.4, 18′ x 12′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
Exposure(s) 7 x 300s each Ha, OIII, SII
Capture APT
Processing DSS, Nebulosity, Photoshop
Mapped SII, Ha, OIII -> RGB
28 August 2019|Caldwell, Narrowband, Nebula, News, NGC Summer|

Cygnus Wall – red channel only

After gathering HOYS-CAPS data thought I’d give this a quick go in red channel only.

Object ID Cygnus Wall
Details “Mexico and Central American” part of North America Nebula
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
IDAS P2 LP filter
8x180s 2×2, darks, bias, flats
-11C
Capture APT
Processing Nebulosity, Photoshop
23 July 2019|Caldwell, Nebula, News, NGC Summer|