NGC6188 in 3nm NII

[avandonk]

I still had some slight differential flexure between the RH200 and the camera. This only showed up on long exposures of sixteen minutes plus.

With the guidescope near the top of the camera it shows up as rotation and star elongation at the 'top' of the image which is really the 'bottom' of the camera.

I moved the guidescope to the centre right of the camera. For test purposes I ran some cable ties to the top of the RH200 from both sideplates.

It worked!

NGC6188 4x16 minutes in NII. Large image here 5MB.

http://d1355990.i49.quadrahosting.co...GC6188_NII.jpg



I will get a couple of stainless steel turnbuckles today to replace the cable ties.


Bert

[gregbradley]

That's perfect now. Great job of tracking down the flexure.

One of your best narrowband images so far. Its very deep. It almost looks like Eta Carina when you first look at it.

Greg.

[strongmanmike (Michael)]

I agree with Greg, pretty deep Bert

Attached is a picture of Berts neighbour working on the power supply to Berts observatory and Berts original observatory control schematic

Mike

[Larryp (Laurie)]

That's superb, Bert!

[peeb61 (Paul)]

Great Bert! One of my favourite areas shown in a 'different light'.

LOL Mike!

Paul

[multiweb (Marc)]

One of my fav neb too. Your field is top notch on this one Bert. I think you've nailed it here.

[avandonk]

Originally Posted by gregbradley

That's perfect now. Great job of tracking down the flexure.

One of your best narrowband images so far. Its very deep. It almost looks like Eta Carina when you first look at it.

Greg.

Thanks Greg. I do not fret about problems but prefer to solve them in my own unorthodox way. Step one is to identify the problem correctly. Misconceptions can only lead to infinite loops.

I ran some tests with the turnbuckles holding the RH200 laterally and found I still had exactly the same slight differential flexure. This is 0.2 degrees rotation over a six hour movement of the mount near the SCP. It is far less or non existent away from the SCP.

I can only conclude that the OTS frame and its dovetail is flexing more than the RH200 under the weight of the CFW and camera. It is NOT the single leg of the RH200.

This differential flexure is only just noticeable in exposures longer than sixteen minutes. Even at 32 minutes you have to pixel peep to pick it up.

I removed the turnbuckles.

Then without any adjustment took this image 7x16 minutes NII 6MB

http://d1355990.i49.quadrahosting.co.../NGC6334_L.jpg




Bert

[avandonk]

Originally Posted by strongmanmike

I agree with Greg, pretty deep Bert

Attached is a picture of Berts neighbour working on the power supply to Berts observatory and Berts original observatory control schematic

Mike

Mike truth is stranger than fiction. These are my data, video and security video cables that run from my inside computer to the observatory.

As you can see I do not have to deal with a SWMBO. The only surfaces at my place that are kept clean are optical! My house is my workshop.

Bert

[avandonk]

Originally Posted by Larryp

That's superb, Bert!

Originally Posted by peeb61

Great Bert! One of my favourite areas shown in a 'different light'.

LOL Mike!

Paul

Originally Posted by multiweb

One of my fav neb too. Your field is top notch on this one Bert. I think you've nailed it here.

Thanks, I still have a long way to go to completely master this system. Any progress is almost as good as encouragement.

Bert

[Moon (James)]

The only surfaces at my place that are kept clean are optical! My house is my workshop.

Gee that ceiling is really dirty Bert - I don't even have that many cobwebs in my observatory / mancave :-)

[strongmanmike (Michael)]

Originally Posted by avandonk

Mike truth is stranger than fiction. These are my data, video and security video cables that run from my inside computer to the observatory.

As you can see I do not have to deal with a SWMBO. The only surfaces at my place that are kept clean are optical! My house is my workshop.

Bert

Holy Cow batman ....man..

Mike
Note to self, if Bert invites you to dinner...suggest a restaurant

[Ross G]

Hi Bert,

A great photo.

The detail is amazing!

...nice wiring setup btw...

Ross.

[avandonk]

Some years ago my special lady friend offered to come with a about a dozen of her girlfriends to give my place a spring clean. The real motive was to make a suitable place for her to move in and to take over. I resisted and my best defence was to make my place as unattractive as possible for a takeover.

It worked.

The cobwebs are just superficial and pose no health threat. The many spiders that live in my house eliminate any flies or mozzies before nightfall. I do not use any insect sprays as they are neurotoxins and affect human nerve signals.

The more people commented on the cobwebs the more I was determined to let them accumulate as the spiders scurried about the place.

For a bit of sport I sometimes catch a slow blowie alive and place it in a web near a very big black 'tame' spider. It is wonderful to watch this spider swiftly and efficiently catch and devour the fly.

What is more important is that I decided to enjoy life rather than wasting time polishing and cleaning my possessions to some unattainable level that only the obsessive compulsive person aspires to.

Bert

[Larryp (Laurie)]

Originally Posted by avandonk

Some years ago my special lady friend offered to come with a about a dozen of her girlfriends to give my place a spring clean. The real motive was to make a suitable place for her to move in and to take over. I resisted and my best defence was to make my place as unattractive as possible for a takeover.

It worked.

The cobwebs are just superficial and pose no health threat. The many spiders that live in my house eliminate any flies or mozzies before nightfall. I do not use any insect sprays as they are neurotoxins and affect human nerve signals.

The more people commented on the cobwebs the more I was determined to let them accumulate as the spiders scurried about the place.

For a bit of sport I sometimes catch a slow blowie alive and place it in a web near a very big black 'tame' spider. It is wonderful to watch this spider swiftly and efficiently catch and devour the fly.

What is more important is that I decided to enjoy life rather than wasting time polishing and cleaning my possessions to some unattainable level that only the obsessive compulsive person aspires to.

Bert

I bow to your superior intellect, Bert!

[avandonk]

Originally Posted by Larryp

I bow to your superior intellect, Bert!

Laurie as I am not delusional or even slightly crazy I doubt that I have a superior intellect. It is only the completely insane that have no doubts about their sanity. My outlook on life is just based on real evidence. I used to tell my students that the difference between them and me was that I had already made all the mistakes. My job was to show them how not to waste time making the same mistakes. Their job was to find new ones as they went further from where we all were! A very smart man told me a long time ago 'if you are not making mistakes, you are not trying hard enough!'

Here is last nights test image NGC6164 13MB

http://d1355990.i49.quadrahosting.co.../NGC6164_L.jpg

Bert

[Larryp (Laurie)]

Originally Posted by avandonk

Laurie as I am not delusional or even slightly crazy I doubt that I have a superior intellect. It is only the completely insane that have no doubts about their sanity. My outlook on life is just based on real evidence. I used to tell my students that the difference between them and me was that I had already made all the mistakes. My job was to show them how not to waste time making the same mistakes. Their job was to find new ones as they went further from where we all were! A very smart man told me a long time ago 'if you are not making mistakes, you are not trying hard enough!'

Here is last nights test image NGC6164 13MB

http://d1355990.i49.quadrahosting.co.../NGC6164_L.jpg

Bert

A sound philosophy, Bert. Love the image, too