[nswnra] Re: finally - some scope time (with AN)!
- From: "Corona Australis" <corona_australis@xxxxxxxxxxxxxx>
- To: <nswnra@xxxxxxxxxxxxx>
- Date: Fri, 29 Oct 2010 06:55:48 +1100
I would also look at making up some triangular shaped gussets you can araldite
into the corners
inside your rocker box. If you have limited space just make them smaller but
make more.
Something like 1.5" x 1.5" x 1.5" you can buy Tassie Oak at Bunnings use the
25mm thick stuff.
2 for the floor to front panel maybe three for the side walls if they're a bit
longer and 3 - 4 up
wall joins at the front of the rocker box. The only thing is you won't be able
to take it apart
if you ever want to sell it.
Look forward to reading your report. Sounds like you have a bit of fun.
Cheers,CS
Rob
Thanks for those suggestions Rob. I suspected the stars were too close to each
other.
I spent most of last night looking at galaxies in Eridanus/Fornax and the Argo
was pretty good.
I was also looking at the helix and saturn PN's in the western sky and the
positioning
was up to a whole FOV out.
The mount does feel a bit sloppy, squirming about a bit. One of the IIS guys
suggested
screwing a plate over the alt trunnions to stop things wriggling. I might try a
couple
of metal brackets on the inside of the 2 side plates.
I do have a report almost finished, but I want to check one of the galaxies in
Eridanus
as the maps suggest there is another one nearby. Last night I was concentrating
on
the Argo more than the objects in the eyepiece. I have made the mistake of
setting
the magnitude limits too low in Tour, tonight, if the weather gives me a
chance, I will
try increasing it to 15. Some of those galaxy cores and ellipticals at fainter
mags are
easier to see than a face on spiral 3 or 4 mags brighter.
Our weekends are pretty full at the moment, Brisbane on Saturday and the 4WD
Club
christmas party the weekend after. Hope the weather clears for tonight. Cheers,
Paul.
On 28/10/2010, at 7:54 AM, Corona Australis wrote:
Hi Paul,
I've never had enough faith that those GSO style mounts would stay rock solid
over time.
I would recommend bracing or if you have the time a rebuild. I'm not too sure
about the alt
trunnions I've never really taken much notice of how they really work it has
been awhile
since I've seen Glen's GSO. So sorry I can't help you too much there. All I can
say is it is
worth the effort spending time in making sure you mount is as solid as you can
get it.
Does the mount feel sloppy to you? the Argo is pretty accurate and can be
susceptible to
mount errors, no mount is perfect. If these errors are consistent you can use
Argo's inbuilt
TPAS to program to get your pointing accuracy up to speed and fix some mount
errors. You
should be able to land most objects near the centre of your 22mm t4. What size
EP are you
using for alignment? try a higher powered/smaller FOV EP for this.
The alignment stars you used are a little on the too close side. You should aim
for alignment
stars that are a minimum of 30 degrees to a maximum of 90 degrees separation in
both alt
and azi. You will probably find that you need to do a realignment say after
looking at objects
in the west and then you decide to look at objects in the east (TPAS can fix
this problem). My
mount can generally cover most of the sky on two alignment stars but running
TPAS would
make it even better, just haven't gotten around to doing it.
Cheers,CS
Rob
From: nswnra-bounce@xxxxxxxxxxxxx [mailto:nswnra-bounce@xxxxxxxxxxxxx] On
Behalf Of Paul McGuiness
Sent: Wednesday, 27 October 2010 18:31
To: nswnra@xxxxxxxxxxxxx
Subject: [nswnra] Re: finally - some scope time (with AN)!
Hi Rob, Thanks for the good wishes. It was so good to have it working
reasonably well. My alignment starts were pretty close to each other,
Achernar and Al Nair. Most of the others are either Northern Hemisphere
objects, behind the house or not visible. Some objects were on the edge
of the FOV of the 22T4 which surprised me, others were nearby, butthat
didn't stop me finding them. The guys on IIS suggested that the mount
may need some additional bracing, also a plate to stop the alt trunnions
from sliding around. Makes sense. I know your mount is different, but as an
experienced user, does that make sense? Early days yet, tonight
looks good too, tiny storms have evaporated. Hooray!!.
_____
From: corona_australis@xxxxxxxxxxxxxx
To: nswnra@xxxxxxxxxxxxx
Subject: [nswnra] Re: finally - some scope time (with AN)!
Date: Wed, 27 Oct 2010 07:00:10 +1100
Paul,
Excellent stuff mate! I was thinking about you when we were heading home
from Lismore last night and seeing the skies were pretty clear and wondering
whether you were able to get out under them and give the new toy a good
work over. It is certainly a pleasure when you can just dial up point and look
no more star charts or hours sitting down planning and printing out star charts.
I love Tour mode myself. Don't be surprised if every object doesn't land smack
dab in the middle of the FOV. There are a lot of minor position errors in the
NGC
and IC catalogues but most should be fairly close to centre or within the FOV of
your 9mm t6.
We might get lucky over the next few nights and see a bit of clear air.
Cheers,CS
Rob
From: nswnra-bounce@xxxxxxxxxxxxx [mailto:nswnra-bounce@xxxxxxxxxxxxx] On
Behalf Of Paul McGuiness
Sent: Tuesday, 26 October 2010 23:21
To: nswnra@xxxxxxxxxxxxx
Subject: [nswnra] finally - some scope time (with AN)!
Hi all, Well, the AN is off and running. After sorting out
the "direction sense", it was into tour mode.
Galaxies spotted before the moon started to rise:
1097, 1316, 1365, 289, 253, 134, 55, 7793, 7713.
Planetaries:
7293 (Helix - good with UHC), 7009 (Saturn),
6818 (Little Gem), 6853 (Dumbell), 1360 (a very bright oval shaped one).
Also spotted a dozen or so globulars. Most of the
positioning was somewhere near the FOV but
not exact, maybe some fine tuning to be done. Initial
feelings are that the gadget is excellent. Great to
get some scope time again. Cheers, Paul.
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Paul McGuiness
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