Re: [ap-ug] Re: [ap-gto] Visit to Las Campanas


Dec 16, 2013

 


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#66901 Dec 16, 2013

Over the next few weeks we will be doing imaging remotely. ��Roland

-----Original Message-----

From: Don Anderson jockey_ca@...>

To: ap-gto ap-gto@yahoogroups.com>; ap-ug ap-ug@yahoogroups.com>

Sent: Mon, Dec 16, 2013 11:44 am

Subject: Re: [ap-gto] Visit to Las Campanas





Great story Roland. What a fantastic project. Would be interesting to see some of the images that come from that scope. Think they will send you some that you could post?Don Anderson

On Sunday, December 15, 201312:11:50 PM, "chris1011@..." chris1011@...> wrote:



��

Hi All,

Our Chile trip culminated with a 6 day visit to Las Campanas observatory complex - the real reason why we went to Chile. Our task there, besides basking in large telescopes and scientific equipment, was to install an Astro-Physics telescope - a 305mm F8 Mak-Cass astrograph mounted on a 1600 mounting, along with some very fancy remote imaging software developed by John Hoot. Other team members were Mike Long of the Carnegie Science Institute which owns this mountain complex, Dave Jurasevich from Mount Wilson Observatory, and Marj Christen and myself.��Mike built the computer system and the website that allows remote access to the scope. Dave put the camera system together - cameras being donated for this project by FLI and SBIG - and tested the whole shebang on Mount Wilson for a month before disassembly and crating for the trip down south. A major project in itself! Once down there, the team of Mike, Dave, Marj and myself set to work to put this scope together. The end result is very professional, beautifully integrated with the observatory building.

AP donated the mount and telescope. The scope is a carbon fiber Maksutov design which I built and tested here this fall using��glass��that I had in reserve for a number of years. I was not sure how well this would work versus the more common open tube RCs that are used for this type of imaging. To say that I was more than pleased with the performance is an understatement. This instrument matches perfectly the conditions on the mountain. The carbon fiber design produces a stable focus under varying temperature conditions. The front surface of the corrector lens��was left uncoated so that the surface could be easily cleaned without ruining the coatings and introducing sleeks and scratches. The wind up there can bring dust into the observatory at times.��The particular design of this Mak cools down quickly with no annoying tube currents that we could see. Conditions on the mountain are famous for sub-arc second seeing, and we certainly experienced nights on the order of 0.5 arc sec FWHM as measured by their seeing monitors. That's 5 times better than a typical night here in Illinois.

One of the outcomes of this great seeing was that we noticed that the star images were not round. My first thought was that the optics had misaligned during shipping, but this was not the case. After much testing and sweating on my part, I discovered that the cooling fans on the two cameras were vibrating with enough force to cause the entire camera system to vibrate like a tuning fork. Some quick and dirty modifications were made to completely isolate the fans from the cameras, and voila, the star images became perfectly round. I give thanks to the observatory staff, especially Oscar the head technical expert who was our guardian angel during the entire assembly and testing procedure. In fact, the entire staff was extremely helpful and made our visit and work a delightful experience.

Some of the astronomy professionals were keenly interested in this project because it ushers in a new era for them. Up to now almost all work is done on-site by the visiting astronomers. I don't believe there is any telescope on the mountain that can be remotely operated. Yes, our little 12" Mak is not a meter class scope, but it does have a much more modern interface than some of the large scopes on that mountain.

I will post some images taken on the mountain in the ap-ug pictures section.

Rolando



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#66926 Dec 18, 2013

Remote imaging will change your life.��

It looks like there is room for another telescope in there.�� Know anyone with a spare RHA floating around?�� ;-)

j



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#66927 Dec 18, 2013

There will be a second 1600 mount going in on the north end of the building. It will hold a 12" Takahashi RC.��Rolando

-----Original Message-----

From: jpgleasonid jpgleasonid@...>

To: ap-ug ap-ug@yahoogroups.com>

Sent: Wed, Dec 18, 2013 3:02 pm

Subject: [ap-ug] Re: [ap-gto] Visit to Las Campanas





Remote imaging will change your life.��

It looks like there is room for another telescope in there.�� Know anyone with a spare RHA floating around?�� ;-)

j



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#66928 Dec 18, 2013

Do they have high speed internet?



Jim

On 12/18/2013 1:02 PM,jpgleasonid@... wrote:

Remote imaging will change your life..

It looks like there is room for another telescope in there..Know anyone with a spare RHA floating around?. ;-)

j



-- "Underlying most arguments against the free market is a lack of belief in freedom itself."Milton Friedman



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#66929 Dec 19, 2013

Yes. Our observatory building will have fiber optic link.��Rolando

-----Original Message-----

From: James Janusz jjanusz@...>

To: ap-ug ap-ug@yahoogroups.com>

Sent: Wed, Dec 18, 2013 5:53 pm

Subject: Re: [ap-ug] Re: [ap-gto] Visit to Las Campanas





Do they have high speed internet?

Jim

On 12/18/2013 1:02 PM,jpgleasonid@... wrote:

Remote imaging will change your life.��

It looks like there is room for another telescope in there.��Know anyone with a spare RHA floating around?�� ;-)

j



-- "Underlying most arguments against the free market is a lack of belief in freedom itself."Milton Friedman







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#66930 Dec 19, 2013

This southern facility looks to be the best of the best.��

So what's the equipment plan for Hawaii... Lounge chairs, a Mai Tai or two, and a high speed connection to Las Campanas?

;P

Pete









On Dec 19, 2013, at 11:10 AM, chris1011@... wrote:



��

Yes. Our observatory building will have fiber optic link.��Rolando

-----Original Message-----

From: James Janusz jjanusz@...>

To: ap-ug ap-ug@yahoogroups.com>

Sent: Wed, Dec 18, 2013 5:53 pm

Subject: Re: [ap-ug] Re: [ap-gto] Visit to Las Campanas





Do they have high speed internet?

Jim

On 12/18/2013 1:02 PM,jpgleasonid@... wrote:

Remote imaging will change your life.��

It looks like there is room for another telescope in there.��Know anyone with a spare RHA floating around?�� ;-)

j



-- "Underlying most arguments against the free market is a lack of belief in freedom itself."Milton Friedman



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#66931 Dec 19, 2013

Pool, outdoor barbecue, swaying palm trees, beach and resort spa nearby, snorking, kayaking, sailing during the day....��Rolando

-----Original Message-----

From: Pete p14@...>

To: ap-ug ap-ug@yahoogroups.com>

Sent: Thu, Dec 19, 2013 10:44 am

Subject: Re: [ap-ug] Re: [ap-gto] Visit to Las Campanas





This southern facility looks to be the best of the best.��

So what's the equipment plan for Hawaii... Lounge chairs, a Mai Tai or two, and a high speed connection to Las Campanas?

;P

Pete









On Dec 19, 2013, at 11:10 AM, chris1011@... wrote:





��

Yes. Our observatory building will have fiber optic link.

��Rolando

-----Original Message-----From: James Janusz jjanusz@...>To: ap-ug ap-ug@yahoogroups.com>Sent: Wed, Dec 18, 2013 5:53 pmSubject: Re: [ap-ug] Re: [ap-gto] Visit to Las Campanas



Do they have high speed internet?

Jim

On 12/18/2013 1:02 PM,jpgleasonid@... wrote:

Remote imaging will change your life.��

It looks like there is room for another telescope in there.��Know anyone with a spare RHA floating around?�� ;-)

j



-- "Underlying most arguments against the free market is a lack of belief in freedom itself."Milton Friedman



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