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Thread: More Southern Targets - Pulling/Pushing the Focuser Tube

  1. #11
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    Default Re: More Southern Targets - Pulling/Pushing the Focuser Tube



    I hope you can get a new focuser soon. I had a similar problem on my old 4.25" Edmund newtonian. Eventually I was able to find a newish one on the used market. Also, nice evening out there Terry.
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    Default Re: More Southern Targets - Pulling/Pushing the Focuser Tube

    Quote Originally Posted by KT4HX View Post
    Very well done Terry!

    First off - that focuser. That thing looks like an old man who has been trying to eat too many jaw breakers! Agree, it needs replacing ASAP.

    For the objects you list, I logged the first three, but have not targeted the last two as of yet. Here are my notes for comparison:

    Spano 2: Covered in previous thread More Misses than Hits

    NGC 2220: two years ago from 5° S latitude with ED80

    NGC 2220 (Puppis, Open Cluster or Asterism, mag=7.0 per one source while most don't list one, size=anywhere from 5.0' to 22.0' depending on who you believe):

    John Herschel discovered this grouping in 1834 during his observations from the Cape of Good Hope in South Africa. In my 80mm I found it nothing more than a scalene triangle of three stars (7th, 8th & 9th) pointed northwest. This was at 26x and 40x. Due to the encroaching clouds I never did get to view it at 71x. However, given what I've read about it, I likely wouldn't have gained much. Its dominate star is mag 7.7 HD 44737 along its southeastern side. Depending upon which angular dimension one accepts for it, one might include a fourth star of magnitude 8.8 that I noted positioned about 1.5' southeast of HD 44737. Suffice it to say that the cluster/asterism dovetailed nicely with the general theme of the evening - poor.



    Alessi J0644.7-4658: two years ago from 5° S latitude with ED80

    Alessi J0644.7-4658 (Puppis, Asterism, brightest star=7.5, size=56.0’):

    Sighting in on Canopus I swept NNE just west of a line of three stars (4th, 5th & 6th), and continued on for about 5° to a NE-SW pair of stars of 4th and 6th magnitude. Passing over them I easily swept up this interesting grouping. When viewing at 26x I immediately picked up eight stars dominated by five of 7th and 8th mag that, to my eye, formed a small scorpion shape, with curved body and pinchers. The anchor star of this group, HD 49259 (mag 7.5) was the middle star of the curved tail. Using 40x I noted about 11 or 12 stars peppering the field, and at 71x there seemed to be another one or two stars pushing through. I found this an attractive grouping, with enough brighter stars to catch one’s attention and make it stand out well from the field.


    The other two I have not targeted as of yet. Obviously the ones I have seen are much higher here for me and without horizon extinction. I mostly have to contend with poor seeing and transparency frequently as well as constant glaring from security lights. Good work buddy!
    Thanks Alan! I remember those Jawbreakers candy (little round colored balls) when I was a kid - didn't know they still made 'em.

    Spano 2 - glad to have picked up those 10-11th mag. stars low on the horizon.

    NGC 2220 - I guess its just 3 stars then...

    Alessi J0644.7-4658 - weird to watch it slowly move behind the power lines on the horizon.

    The last two asterisms I observed were faint; had to really focus to pick up those 11th mag. stars. But worth it - would have been very difficult if not impossible with the 4.5".

    Cloudy nights and moon glow from here on out - won't be seeking out new targets until the end of the month.

    That was a good session to close out this past week of continuous observing.

    Quote Originally Posted by kanadalainen View Post
    Hi Terry,

    Nicely done, I appreciate the interesting targets that you like to go after. I went through the site that Gabby mentioned... I get the same feeling as I used to when putting together old vehicles in my undergraduate days. Lots of selection and mix and match! Good luck to you finding a new focuser. They also do come up on CN classified, I've found good stuff there.

    Kind regards,
    Ian
    Thanks Ian. From my home urban skies - asterisms (and some OCs) have been my primary targets the past 3 yrs.

    Haven't looked through CN classified yet - will need to go through it.

    Great reconstructive work with the Tasco 11TR! I've been using 114/900mm Newts the past 5-6 yrs - I really like this size scope.

    Quote Originally Posted by helicon64 View Post
    I hope you can get a new focuser soon. I had a similar problem on my old 4.25" Edmund newtonian. Eventually I was able to find a newish one on the used market. Also, nice evening out there Terry.
    Thanks Michael. In the meantime, I'll keep pulling and pushing with this scope.

    Good that you were able to find a replacement focuser for that scope - it's a classic. Hope you still have it.
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    Default Re: More Southern Targets - Pulling/Pushing the Focuser Tube

    Nice walk in the southern skies Terry! I am getting over my flu but fear that I missed the clear sky window. Clouds and rain for next few days here.

    You have a bunch of scopes, see if focuser from another scope would fit your Meade.
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    Default Re: More Southern Targets - Pulling/Pushing the Focuser Tube

    Quote Originally Posted by Bigzmey View Post
    Nice walk in the southern skies Terry! I am getting over my flu but fear that I missed the clear sky window. Clouds and rain for next few days here.

    You have a bunch of scopes, see if focuser from another scope would fit your Meade.
    Thanks Andrey. That was a nice little run of clear skies we had here in So Cal!

    Unfortunately none of the focusers from my two spare Newtonian OTAs fits this old (1997-1998) Meade scope, which has a 2" focuser.
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    Default Re: More Southern Targets - Pulling/Pushing the Focuser Tube

    Never seen so much wear on a focusser-rack. 24/7 sessions?
    Nice objects in your report!
    Thanks!
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    Default Re: More Southern Targets - Pulling/Pushing the Focuser Tube

    Quote Originally Posted by John Baars View Post
    Never seen so much wear on a focusser-rack. 24/7 sessions?
    Nice objects in your report!
    Thanks!
    Thanks John.

    The focuser teeth got ground up last year, after my first observing session with it - the focuser was stiff and I had to put pressure on the rack to move. The original owner told me the scope received practically no usage when he got it (1997-1998). The outside of the scope (and accessories) was indeed almost in new condition when I finally bought it in 2015 - but it looks like the plastic on that focuser teeth deteriorated after so many years of non-use.

    Before my thorough collimation over the weekend, the scope came into focus past the ground up section, so I was able to use the rack and pinion up until then.
    Terry
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