43:
157:
galaxy. Caldwell 17 is located in the southern edge of the constellation
Cassiopeia, between the constellation’s “W” pattern and the Andromeda galaxy. (The neighboring Caldwell 18 is brighter and less diffuse, so it is easier to see.) The best time of year to spot Caldwell 17 from the Northern Hemisphere is the autumn. It can also be seen in northern latitudes of the Southern Hemisphere in the spring. The galaxy was discovered by the English astronomer John Herschel in September of 1829.
215:
291:
221:
153:
galaxy. Just as the planets in the solar system are gravitationally bound to the Sun, so are these smaller galaxies bound to their much more massive galactic host. While many classes of galaxies can exist as satellites, dwarf spheroidal galaxies (small, dim, spherical-shaped galaxies) like
Caldwell 17 have been observed in this role more frequently than any other type of galaxy.
103:
152:
Caldwell 17, also known as NGC 147, is a dwarf galaxy located roughly 2.5 million light-years from Earth. It is a member of the Local Group of galaxies, which is dominated by our Milky Way and the
Andromeda galaxy. Caldwell 17, like its neighbor Caldwell 18, is a distant satellite of the Andromeda
156:
Dwarf satellite galaxies tend to appear very diffuse and dim, so they can be difficult to spot (especially in light-polluted or hazy skies). Caldwell 17 is no exception. It has an apparent magnitude of 9.5, and observers will need a small telescope set up in a dark location to detect the faint
160:
This image of
Caldwell 17 is a composite of observations made in visible and infrared light by Hubble’s Wide Field Camera 3. The image captures an area near the core of the galaxy, which is notable for its elderly stellar population. Astronomers used Hubble’s observations to investigate the
978:
262:– You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
164:
Credit: NASA, ESA, and A. Ferguson (University of
Edinburgh, Institute for Astronomy); Processing: Gladys Kober (NASA/Catholic University of America)
69:
65:
61:
57:
53:
47:
82:
114:
1116:
775:
651:
581:
545:
1139:
1080:
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
671:
490:
907:
371:
870:
833:
796:
741:
707:
635:
529:
474:
446:
431:
418:
166:
For Hubble's
Caldwell catalog website and information on how to find these objects in the night sky, visit: <a href="
768:
679:
664:
601:
565:
503:
391:
355:
1083:
If the file has been modified from its original state, some details may not fully reflect the modified file.
686:
231:
228:
988:
977:
972:
73:
42:
923:
167:
122:
1037:
438:
170:" rel="noreferrer nofollow">www.nasa.gov/content/goddard/hubble-s-caldwell-catalog</a>
453:
309:
188:
303:
178:
109:
1187:
198:
298:
1009:
945:
Click on a date/time to view the file as it appeared at that time.
314:
and was confirmed to be licensed under the terms of the cc-by-2.0.
168:
https://www.nasa.gov/content/goddard/hubble-s-caldwell-catalog
97:
161:
properties of
Caldwell 17’s many globular star clusters.
339:
Add a one-line explanation of what this file represents
87:(4,198 Ă— 3,881 pixels, file size: 18.14 MB, MIME type:
1038:
Utilisateur:Witcher of
Izalith/Galeries d'Izalith
687:
https://www.flickr.com/photos/nasahubble/50290241446/
1067:
1057:
1047:
1027:
141:
121:
Commons is a freely licensed media file repository.
304:
https://flickr.com/photos/144614754@N02/50290241446
102:
214:
8:
1266:xmp.did:be996cb6-82ad-447f-b29a-748c884cc077
995:Transferred from Flickr via #flickr2commons
454:https://www.flickr.com/people/144614754@N02
269:https://creativecommons.org/licenses/by/2.0
245:– to copy, distribute and transmit the work
1085:
947:
335:
1020:The following other wikis use this file:
306:. It was reviewed on 16 December 2020 by
757:845863d094ec87aceeaf3f4f76c986eaa01f8db1
582:Creative Commons Attribution 2.0 Generic
1261:
1253:
1245:
1237:
1229:
1221:
1213:
1195:
1185:
1177:
1156:
1148:
1137:
1129:
1121:
1111:
1103:
1095:
1087:
1007:
921:
905:
884:
868:
847:
831:
810:
794:
755:
739:
721:
705:
649:
633:
615:
599:
579:
563:
543:
527:
488:
472:
405:
389:
369:
353:
350:
331:
324:
7:
296:This image was originally posted to
285:
1005:The following page uses this file:
936:
220:
1078:
344:
338:
236:
211:
134:
80:
343:
275:Creative Commons Attribution 2.0
1117:Adobe Photoshop 21.2 (Macintosh)
329:
289:
256:Under the following conditions:
227:This file is licensed under the
219:
213:
101:
31:
21:
1255:Date metadata was last modified
326:
14:
1263:Unique ID of original document
652:file available on the internet
325:
26:
1:
147:Caldwell 17 (50290241446).jpg
36:
351:Items portrayed in this file
1150:Date and time of digitizing
425:NASA Hubble Space Telescope
199:NASA Hubble Space Telescope
1283:
1179:Supported Flashpix version
1064:Usage on ru.wikipedia.org
1054:Usage on pl.wikipedia.org
1044:Usage on id.wikipedia.org
1034:Usage on fr.wikipedia.org
1024:Usage on de.wikipedia.org
1158:Meaning of each component
1123:File change date and time
937:
16:
328:
108:This is a file from the
994:
973:17:43, 16 December 2020
232:Attribution 2.0 Generic
194:
184:
177:
174:
144:
112:. Information from its
115:description page there
46:Size of this preview:
1258:06:53, 18 August 2020
1126:10:53, 18 August 2020
1097:Horizontal resolution
1247:Number of components
769:determination method
74:4,198 Ă— 3,881 pixels
70:2,215 Ă— 2,048 pixels
66:1,108 Ă— 1,024 pixels
1153:12:26, 26 June 2020
1131:Y and C positioning
1105:Vertical resolution
251:– to adapt the work
179:26 June 2020, 12:26
52:Other resolutions:
1215:Compression scheme
1197:Bits per component
419:author name string
302:by NASA Hubble at
1270:
1269:
1239:Pixel composition
1016:Global file usage
998:
566:copyright license
337:
318:
317:
204:
203:
130:
129:
110:Wikimedia Commons
32:Global file usage
1274:
1086:
985:
908:‎Flickr photo ID
889:
852:
815:
778:
773:
689:
684:
680:described at URL
674:
669:
530:copyright status
511:
508:
504:publication date
456:
451:
441:
436:
426:
423:
372:globular cluster
322:
321:16 December 2020
312:
293:
292:
286:
282:
279:
276:
273:
270:
229:Creative Commons
223:
222:
217:
216:
180:
148:
142:
126:
105:
104:
98:
92:
90:
77:
62:831 Ă— 768 pixels
58:519 Ă— 480 pixels
54:260 Ă— 240 pixels
48:649 Ă— 600 pixels
1282:
1281:
1277:
1276:
1275:
1273:
1272:
1271:
1074:
1014:
999:
991:
983:
939:
938:
935:
934:
933:
932:
931:
930:
929:
928:
926:
914:
913:
912:
910:
899:
898:
897:
896:
895:
894:
893:
892:
890:
887:
877:
876:
875:
873:
862:
861:
860:
859:
858:
857:
856:
855:
853:
850:
840:
839:
838:
836:
825:
824:
823:
822:
821:
820:
819:
818:
816:
813:
803:
802:
801:
799:
788:
787:
786:
785:
784:
783:
782:
781:
780:
779:
774:
771:
762:
761:
760:
758:
748:
747:
746:
744:
733:
732:
731:
730:
729:
728:
727:
726:
724:
714:
713:
712:
710:
699:
698:
697:
696:
695:
694:
693:
692:
691:
690:
685:
682:
676:
675:
670:
667:
658:
657:
656:
654:
642:
641:
640:
638:
627:
626:
625:
624:
623:
622:
621:
620:
618:
608:
607:
606:
604:
593:
592:
591:
590:
589:
588:
587:
586:
584:
572:
571:
570:
568:
557:
556:
555:
554:
553:
552:
551:
550:
548:
536:
535:
534:
532:
521:
520:
519:
518:
517:
516:
515:
514:
513:
512:
509:
506:
497:
496:
495:
493:
481:
480:
479:
477:
466:
465:
464:
463:
462:
461:
460:
459:
458:
457:
452:
449:
443:
442:
437:
434:
428:
427:
424:
421:
412:
411:
410:
408:
398:
397:
396:
394:
383:
382:
381:
380:
379:
378:
377:
376:
374:
362:
361:
360:
358:
342:
341:
340:
320:
308:
290:
284:
283:
280:
277:
274:
271:
268:
267:
235:
224:
210:
205:
146:
139:
132:
131:
120:
119:
118:is shown below.
94:
88:
86:
79:
78:
51:
12:
11:
5:
1280:
1278:
1268:
1267:
1264:
1260:
1259:
1256:
1252:
1251:
1248:
1244:
1243:
1240:
1236:
1235:
1232:
1228:
1227:
1224:
1220:
1219:
1216:
1212:
1211:
1210:
1209:
1206:
1203:
1198:
1194:
1193:
1190:
1184:
1183:
1180:
1176:
1175:
1174:
1173:
1172:does not exist
1170:
1167:
1164:
1159:
1155:
1154:
1151:
1147:
1146:
1143:
1136:
1135:
1132:
1128:
1127:
1124:
1120:
1119:
1114:
1110:
1109:
1106:
1102:
1101:
1098:
1094:
1093:
1090:
1077:
1073:
1072:
1071:
1070:
1062:
1061:
1060:
1052:
1051:
1050:
1042:
1041:
1040:
1032:
1031:
1030:
1018:
1017:
1013:
1012:
1003:
1002:
997:
996:
993:
989:
986:
982:4,198 Ă— 3,881
980:
975:
970:
966:
965:
962:
959:
956:
953:
950:
943:
942:
927:
922:
920:
919:
918:
917:
916:
915:
911:
906:
904:
903:
902:
901:
900:
891:
885:
883:
882:
881:
880:
879:
878:
874:
869:
867:
866:
865:
864:
863:
854:
848:
846:
845:
844:
843:
842:
841:
837:
832:
830:
829:
828:
827:
826:
817:
811:
809:
808:
807:
806:
805:
804:
800:
795:
793:
792:
791:
790:
789:
767:
766:
765:
764:
763:
759:
756:
754:
753:
752:
751:
750:
749:
745:
740:
738:
737:
736:
735:
734:
725:
722:
720:
719:
718:
717:
716:
715:
711:
706:
704:
703:
702:
701:
700:
678:
677:
663:
662:
661:
660:
659:
655:
650:
648:
647:
646:
645:
644:
643:
639:
636:source of file
634:
632:
631:
630:
629:
628:
619:
616:
614:
613:
612:
611:
610:
609:
605:
600:
598:
597:
596:
595:
594:
585:
580:
578:
577:
576:
575:
574:
573:
569:
564:
562:
561:
560:
559:
558:
549:
544:
542:
541:
540:
539:
538:
537:
533:
528:
526:
525:
524:
523:
522:
510:31 August 2020
502:
501:
500:
499:
498:
494:
489:
487:
486:
485:
484:
483:
482:
478:
473:
471:
470:
469:
468:
467:
445:
444:
432:Flickr user ID
430:
429:
417:
416:
415:
414:
413:
409:
406:
404:
403:
402:
401:
400:
399:
395:
390:
388:
387:
386:
385:
384:
375:
370:
368:
367:
366:
365:
364:
363:
359:
354:
352:
349:
348:
347:
346:
345:
334:
333:
330:
327:
316:
315:
310:FlickreviewR 2
294:
266:
265:
264:
263:
254:
253:
252:
246:
239:You are free:
226:
225:
212:
209:
206:
202:
201:
196:
192:
191:
186:
182:
181:
176:
172:
171:
149:
140:
138:
135:
133:
128:
127:
106:
96:
95:
45:
41:
40:
39:
34:
29:
24:
19:
13:
10:
9:
6:
4:
3:
2:
1279:
1265:
1262:
1257:
1254:
1249:
1246:
1241:
1238:
1233:
1230:
1225:
1222:
1217:
1214:
1207:
1204:
1201:
1200:
1199:
1196:
1191:
1189:
1186:
1181:
1178:
1171:
1168:
1165:
1162:
1161:
1160:
1157:
1152:
1149:
1144:
1141:
1138:
1133:
1130:
1125:
1122:
1118:
1115:
1113:Software used
1112:
1107:
1104:
1099:
1096:
1091:
1088:
1084:
1081:
1075:
1069:
1066:
1065:
1063:
1059:
1056:
1055:
1053:
1049:
1046:
1045:
1043:
1039:
1036:
1035:
1033:
1029:
1026:
1025:
1023:
1022:
1021:
1015:
1011:
1008:
1006:
1000:
992:
987:
981:
979:
976:
974:
971:
968:
967:
963:
960:
957:
954:
951:
949:
948:
946:
940:
925:
909:
872:
835:
798:
777:
770:
743:
709:
688:
681:
673:
666:
653:
637:
603:
583:
567:
547:
531:
505:
492:
476:
455:
448:
440:
439:144614754@N02
433:
420:
393:
373:
357:
323:
313:
311:
305:
301:
300:
295:
288:
287:
261:
258:
257:
255:
250:
247:
244:
241:
240:
238:
237:
233:
230:
218:
207:
200:
197:
193:
190:
187:
183:
173:
169:
165:
162:
158:
154:
150:
143:
136:
124:
117:
116:
111:
107:
100:
99:
93:
84:
83:Original file
75:
71:
67:
63:
59:
55:
49:
44:
38:
35:
33:
30:
28:
25:
23:
20:
18:
15:
1218:Uncompressed
1082:
1079:
1019:
1004:
944:
941:File history
617:26 June 2020
475:published in
319:
307:
297:
259:
248:
242:
163:
159:
155:
151:
123:You can help
113:
81:
22:File history
1188:Color space
1089:Orientation
924:50290241446
812:19,017,462
546:copyrighted
260:attribution
189:Caldwell 17
145:Description
1001:File usage
984:(18.14 MB)
958:Dimensions
723:image/jpeg
708:media type
407:some value
272:CC BY 2.0
89:image/jpeg
27:File usage
955:Thumbnail
952:Date/Time
797:data size
602:inception
208:Licensing
1234:4,198 px
1226:3,881 px
1134:Centered
1076:Metadata
990:Szczureq
742:checksum
665:operator
332:Captions
249:to remix
243:to share
234:license.
37:Metadata
1142:version
1068:NGC 147
1058:NGC 147
1048:NGC 147
1028:NGC 147
1010:NGC 147
969:current
964:Comment
392:creator
356:depicts
336:English
137:Summary
85:
1223:Height
1108:72 dpi
1100:72 dpi
1092:Normal
886:4,198
849:3,881
834:height
672:Flickr
491:Flickr
299:Flickr
195:Author
185:Source
1231:Width
888:pixel
871:width
851:pixel
776:SHA-1
1192:sRGB
1145:2.32
1140:Exif
961:User
814:byte
281:true
278:true
175:Date
17:File
1242:RGB
447:URL
1208:16
1205:16
1202:16
1169:Cr
1166:Cb
772::
683::
668::
507::
450::
435::
422::
72:|
68:|
64:|
60:|
56:|
50:.
1250:3
1182:1
1163:Y
125:.
91:)
76:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
.jpg){kind=link}