Clear skies - Jim Crazy PNW imager !
A-P Mach1 on 12" concrete pier - ROR structure.
Tak FSQ85-EDX, Tak FS-128. Orion 8" f/3.9 w/MoonLite motorized - MPCC MkIII CCD:
SBIG 8300M/FW8, Astrodon 36mm LRGB, 5nm Ha, 3nm SII, OIII - Canon EOS 6D unmod SSI3, SSAG,
Skytools3pro, MaxImDLpro, PSCS5, PSPpro, TheSkyX, TheSky6, BYE, StarTools
Orion XX14g -for visual- diags, ep's, accy tubes, Binocs .
First and foremost observing love: naked eye.
Last but not least, telescopes.
And I sometimes dabble with cameras.
Quote:The Cambridge Atlas of Herschel Objects is very good in its own way, but quite specialized and limited.It uses the same plan and star depth as the Cambridge Atlas of Double Stars, a work about which I have no such caveats.The Herschel atlas does a fine job of showing where Wm. Herschels objects lie, and what their Herschel designations are.On the other hand, given the size of the Herschel atlas, it obviously doesn't contain anywhere near enough stars to star-hop to all the objects that it shows. The other odd thing is that it labels the objects only with the Herschel designations, not with their "real" names -- namely, the NGC numbers.
Cactus Patch Observatory / 14" LX200
"The four points of the compass be logic, knowledge, wisdom, and the unknown. Some do bow in that final direction. Others advance upon it. To bow before the one is to lose sight of the three."
Quote:I own and use The Cambridge Atlas of Herschel Objects. I think it is the most beautiful of the contemporary atlases. I also like the larger scale and page size (compared to the popular Sky Pocket Atlas). The showpiece list (p. 12-33) and the 2500 object list (p. 106-183) are quite good. EDIT: The 2500 object list in the appendix of The Cambridge Atlas of Herschel objects is sequenced by NGC number, which is the second column in the table. Thus, if you know the NGC number of an object, you can identify the Herschel number and class, as well as the other columns of data. Finding a specific object in the atlas is pretty simple since the chart number, RA, dec, mag, SB, etc. are some of the data listed in the 2500 object list. Regarding nearby stars to assist object location, the atlas is mag 7.6 and you can consult Uranometria to get you from a bright star to the specific NGC object. The guides listed below also give directions to the objects.I also have the following Herschel guides.Bratton, M. (2011). The Complete Guide to the Herschel Objects. Cambridge.Mullaney, J. (2007). The Herschel Objects and How to Observe Them. Springer.O'Meara, S. (2007). Herschel 400 Observing Guide. Cambridge.Of the three titles, O'Meara gives the most detail on the Herschel 400, and the photos and location tips and illustrations are quite good. However, I find the Bratton descriptions of the 2500 objects to the point and the photos quite nice--although there are not photos for all 2500 Herschel objects. I also like the descriptions of the observing locations chosen by Bratton. I think his guide makes a nice companion to the Cambridge Atlas of Herschel Objects. Mullaney's guide is a quick approach to the Herschel showpieces, organizing the showpieces by class, and then by constellation within each class. Mullaney's target list in the back matter numbers 615 Herschel objects, but only a portion have descriptions and photos in the body of the text. Of the three guides, Bratton stands at the top of the heap, in my opinion. However, you really need all three because the descriptions are from different observers and offer their own perspectives of the objects.
17.5" f4.1 Manual Discovery Split Tube Dobsonian (Love 100 AFOV and wide TFOVs).
Denk II Dual Power Switch 3x3=9 powers x3 OCS = 27 power options per eyepiece pair.
2.3x40 to 25x100 Binos (and many in between).