Konstantin v. Poschinger Jan 5, 2015
> Am 06.01.2015 um 00:17 schrieb 'Konstantin v. Poschinger' k.poschinger@... [guide-user] <guide-user@yahoogroups.com>:
>
> Hi Bill,
>
> I have copied the files in the guide folder. But I can not see the "Lynd's Dark Nebulae" in the .TDF Window ;-((
>
> Konstantin
>
>
> Konstantin v. Poschinger
>
> Hammerichstr. 5
> 22605 Hamburg
> 040/8805747
> 0171 1983476
>
>> Am 05.01.2015 um 22:49 schrieb Bill Gray pluto@... [guide-user] <guide-user@yahoogroups.com>:
>>
>> Hi all,
>>
>> Truth to tell, I don't know why there wasn't a "Go to LDN" right from
>> Guide 1.0...
>>
>> For the nonce, I've provided this :
>>
>> http://www.projectpluto.com/ldn.zip
>>
>> which contains the data file and .tdf required for display and "go to"
>> capability. UnZIP this in your Guide folder, use Go To... Go To .TDF,
>> select "Lynd's Dark Nebulae", and enter the LDN number.
>>
>> Now, there's a possible problem here, which is that "LDN number"
>> appears to be ambiguous. There are _three_ possible numbers for an
>> LDN object.
>>
>> There is a number assigned by the original author, Beverly Lynds,
>> "when the updated catalogue was created. The significance of this number
>> is unknown. Also, it is not a unique number throughout this version of
>> the catalogue." Which suggests to me it's probably not the one to use.
>>
>> There is a "Running Number in this version of the Catalogue".
>>
>> And finally, there is a "Catalogue number from original published
>> version (ApJS 7, 1)". That's the one with which I am currently going.
>> I'm not sure which is really in use. If it turns out I picked the
>> wrong one, we'll just change (in ldn.tdf) the line
>>
>> text 1 4
>>
>> to read
>>
>> text 51 4
>>
>> for the "Running Number in this version", or to
>>
>> text 56 4
>>
>> for the "Number that B. Lynds assigned when the updated catalogue
>> was created".
>>
>> And I may puzzle this one out myself shortly. But I thought I'd
>> best post what I had here, before any of you invested too much time
>> on it.
>>
>> -- Bill
>>
>> On 01/05/2015 12:22 PM, 'Anthony J. Kroes' akroes@... [guide-user] wrote:
>>> Konstantin and Pierre,
>>>
>>>
>>>
>>> Not natively there isn't that I am aware of, but you can create a 'user
>>> dataset' for them if you don't mind doing a little work - the instructions
>>> are on the Project Pluto website. I did this for all the globulars in M33
>>> (over 200) and it worked great. Someone here may already have done that for
>>> the LDN's and might be willing to share.
>>>
>>>
>>>
>>> Your only alternative is to look them up the old fashioned way, by RA/Dec,
>>> or by alternate name if you know it (i.e. LDN 1531 is Barnard 18). That's
>>> the way I did a bunch recently for a list of Dark Nebula I was working on
>>> observing. Please let me know if you come up with a dataset!
>>>
>>>
>>>
>>> Tony.
>>>
>>>
>>>
>>> From: guide-user@yahoogroups.com [mailto:guide-user@yahoogroups.com]
>>> Sent: Monday, January 05, 2015 5:17 AM
>>> To: guide-user@yahoogroups.com
>>> Subject: [guide-user] Find LDN Dark Nebulas
>>>
>>>
>>>
>>>
>>>
>>> Hi,
>>> is there a possibility to find the LDN Nebulas if you know the number?
>>>
>>> Konstantin
>>>
>>> Konstantin v. Poschinger
>>>
>>> Hammerichstr. 5
>>> 22605 Hamburg
>>> 040/8805747
>>> 0171 1983476
>>>
>>>
>>>
>>>
>>
>>
>> ------------------------------------
>>
>> ------------------------------------
>>
>> To unsubscribe from this group, send an empty email to:
>> guide-user-unsubscribe@egroups.com
>> ------------------------------------
>>
>> Yahoo Groups Links
>>
>>
>>
>
>
>
> ------------------------------------
>
> ------------------------------------
>
> To unsubscribe from this group, send an empty email to:
> guide-user-unsubscribe@egroups.com
> ------------------------------------
>
> Yahoo Groups Links
>
>
>