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Re: Mach1 critique in S&T Dec 2007 OT
In a message dated 11/1/2007 9:59:36 AM Central Daylight Time,
J.Zeglinski@... writes:
Does any other monthly magazine publish months in advance?
For me, it's more annoying than supposedly
In a message dated 11/1/2007 9:59:36 AM Central Daylight Time,
J.Zeglinski@... writes:
Does any other monthly magazine publish months in advance?
For me, it's more annoying than supposedly
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By
Kent Kirkley
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#19570
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Mach1 critique in S&T Dec 2007
The Nov issue of S&T has just arrived and the "next month's contents"
does not mention it. Likewise the contents list for the Dec issue of
Sky &Telescope, vol 114, No 6 on the "www.skypub.com"
The Nov issue of S&T has just arrived and the "next month's contents"
does not mention it. Likewise the contents list for the Dec issue of
Sky &Telescope, vol 114, No 6 on the "www.skypub.com"
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By
Gerald Sargent <sargentg@...>
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#19562
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Re: portable pier height for 1200GTO
Hi Dean,
I have the 48" port. pier that I use when I go to my ranch. My
imaging scope is either my TOA 130 or the FSQ. Check out my web
site.
www.astrodave.com/oharra
Tom O'Harra
about the
Hi Dean,
I have the 48" port. pier that I use when I go to my ranch. My
imaging scope is either my TOA 130 or the FSQ. Check out my web
site.
www.astrodave.com/oharra
Tom O'Harra
about the
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By
tomoharra <toharra@...>
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#19561
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Re: Pier design and sand
Hi Joe,
I come from the school of thought in astrophotography that there is
no substitude for stiffness, like in auto racing there's no
substitute for cubic inches. A lot of ideas for astro
Hi Joe,
I come from the school of thought in astrophotography that there is
no substitude for stiffness, like in auto racing there's no
substitute for cubic inches. A lot of ideas for astro
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By
dmwmpd <westergren@...>
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#19560
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Re: Pier design and sand
Hi Don,
My engineering background reminds me of these pitfalls as well, and it is
a concern at the back of my mind, but I still wonder how much stiffness in
this application, is really enough.
Hi Don,
My engineering background reminds me of these pitfalls as well, and it is
a concern at the back of my mind, but I still wonder how much stiffness in
this application, is really enough.
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By
Joe Zeglinski
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#19559
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Re: Pier design and sand
Hi Joe,
I really don't think PVC pipe buried in the soil is going to be a
very good pier. The ringing that you mention is a high frequency
tone, that the PVC pipe wouldn't have compared to a metal
Hi Joe,
I really don't think PVC pipe buried in the soil is going to be a
very good pier. The ringing that you mention is a high frequency
tone, that the PVC pipe wouldn't have compared to a metal
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By
dmwmpd <westergren@...>
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#19558
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portable pier height for 1200GTO
Hi All,
While waiting for my new mount to get finished, I am thinking about the portable pier height. Currently mine is about 38" and the 1200 mount is 2" taller, so if I had a 36" tall AP pier it
Hi All,
While waiting for my new mount to get finished, I am thinking about the portable pier height. Currently mine is about 38" and the 1200 mount is 2" taller, so if I had a 36" tall AP pier it
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By
Dean S
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#19557
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Re: Pier design and sand
Hi,
The other benefit, I was considering, is that it can be sawn to length,
with some work. However, you can do a deal with a contractor doing road work,
and he will cut one evenly, to your
Hi,
The other benefit, I was considering, is that it can be sawn to length,
with some work. However, you can do a deal with a contractor doing road work,
and he will cut one evenly, to your
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By
Joe Zeglinski
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#19556
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Re: Wood Tripod Vs. Eagle Pier for Mach1GTO?
I went with a portable pier from Particle Wave Technologies for my Mach1GTO/TEC-140
combo, the Monolith LT with 12" extension. The LT heritage from the flagship Monolith pier
is unmistakable, as is
I went with a portable pier from Particle Wave Technologies for my Mach1GTO/TEC-140
combo, the Monolith LT with 12" extension. The LT heritage from the flagship Monolith pier
is unmistakable, as is
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By
Steven Hum <s.hum@...>
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#19555
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Re: Pier design and sand
The bending can be captured using strain guages (gages for US speakers)
Would anyone be prepared to give all of this a go ?
I liked the idea of the 10" concrete drain pipe - I cannot see that
The bending can be captured using strain guages (gages for US speakers)
Would anyone be prepared to give all of this a go ?
I liked the idea of the 10" concrete drain pipe - I cannot see that
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By
Woodwind
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#19554
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Re: Pier design and sand
You are trying to measure the motion of the pier. Use an
accelerometer, not a microphone.
a mic to
port.
You are trying to measure the motion of the pier. Use an
accelerometer, not a microphone.
a mic to
port.
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By
masterson_harold <hfm5022@...>
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#19553
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GTO Keypad Firmware
Can anyone tell me if version 4.12 of the GTO Keypad firmware is still
shipping with the current Mach1GTO mount or has there been an update
released?
I read somewhere that it is to be updated soon.
Can anyone tell me if version 4.12 of the GTO Keypad firmware is still
shipping with the current Mach1GTO mount or has there been an update
released?
I read somewhere that it is to be updated soon.
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By
Larry Phillips
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#19552
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Re: Power Supply for Mach1GTo
Todd,
See my answer on the ap-ug site.
Larry
power
to
Todd,
See my answer on the ap-ug site.
Larry
power
to
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By
Larry Phillips
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#19551
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Re: Wood Tripod Vs. Eagle Pier for Mach1GTO?
I'll be listening closely to this one as my Mach1 mount will be
delivered shortly too. I just dont have the scope or camera you have
so I may opt for the aluminum tripod.
Todd
I'll be listening closely to this one as my Mach1 mount will be
delivered shortly too. I just dont have the scope or camera you have
so I may opt for the aluminum tripod.
Todd
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By
teche70
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#19550
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Re: Power Supply for Mach1GTo
Larry,
What are you putting you mount on? What tripod?
Todd
wrote:
volts DC
supply
be
Larry,
What are you putting you mount on? What tripod?
Todd
wrote:
volts DC
supply
be
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By
teche70
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#19548
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Wood Tripod Vs. Eagle Pier for Mach1GTO?
I'm trying to decide what is the best solution for portable imaging
with my upcoming Mach1GTO mount.
My primary imaging scope is an SV 130 F/6 refractor with STL11K. The
imaging train gets rather
I'm trying to decide what is the best solution for portable imaging
with my upcoming Mach1GTO mount.
My primary imaging scope is an SV 130 F/6 refractor with STL11K. The
imaging train gets rather
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By
dave_snope
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#19549
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Re: Pier design and sand
I question the "Petri method" as I don't think it for sure can
discriminate between the bell like oscillations (which we don't care
about) and the bending oscillations. (Or can it? The frequency of
I question the "Petri method" as I don't think it for sure can
discriminate between the bell like oscillations (which we don't care
about) and the bending oscillations. (Or can it? The frequency of
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By
N. Foldager
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#19547
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Re: Pier design and sand
Jeff:
Of course Don is right, when he argues for as low mass as possible at
the top of the pier. That is also the part of the pier where I would
expect almost no bending to take place.
For that
Jeff:
Of course Don is right, when he argues for as low mass as possible at
the top of the pier. That is also the part of the pier where I would
expect almost no bending to take place.
For that
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By
N. Foldager
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#19546
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Re: Pier design and sand
Joseph Zeglinski wrote:
Joe,
No thanks .... There are too many variables that would skew the results using a microphone not the least of which is the frequency response and how are you going to
Joseph Zeglinski wrote:
Joe,
No thanks .... There are too many variables that would skew the results using a microphone not the least of which is the frequency response and how are you going to
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By
William R. Mattil <wrmattil@...>
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#19545
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Re: Power Supply for Mach1GTo
Hi all,
Just thought I'd chime in and clarify our voltage recommendations. The
electronics are designed to withstand voltage supplies up to 22-24 volts
as stated. However, that high a voltage
Hi all,
Just thought I'd chime in and clarify our voltage recommendations. The
electronics are designed to withstand voltage supplies up to 22-24 volts
as stated. However, that high a voltage
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By
Howard Hedlund
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#19544
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