andrew s

It's all mine and just for my use. Never enquired about subletting. I took it all over and set it up with them. Others have just had it delived for them to set up. Regards Andrew

No they were there already! Hope it clears soon so I can commission the new set up. Regards Andrew

Just having a trip to Spain for a weeks holiday and take a new instrument to PixelSkies to fit to my telescope. Nice to be able to fiddle with it again and meet up with Dave and Michelle two of the nicest and most helpful people you could wish to meet. I am now their longest serving customer being second in and number one having left. Regards Andrew PS note double stacked pillars not scopes. PPS note ex Ian King/ @FLO telescope in the background.

It's not weird it's wonderful (quite literally). Regards Andrew

You can get therapy Jeremy. Regards Andrew

I think we have looked at the highest energies and smallest scales we can realistically reach on earth. To go further we have to rely on the cosmos. In my opinion that's why theory has reached a dead end (at least for now) . While beauty may help guide theoretical research critical new data is what is needed. Possibly the JWST might just do that. Each new innovation in instruments has yielded new insight for theorists to get their calculators into. Regards Andrew s

Nature does not gamble or make any intentional actions. Variation is a random process and if a variation is, or an accumulation of variations are, advantageous or not depends on the current environment and how it changes. What advanced intelligence confers is an ability to adapt to a changing environment without biological changes. We can make and put on a coat if it's cold so we don't need a mutation to be more hairy. Regards Andrew s

It's not just energy density it is what form it is in. You need low entropy. Complex structures well away from local equilibrium this is what organisms build and what can be most simply obtained by eating others. Regards Andrew PS we say the Sun is our source of energy, which is true, but give or take some global warming we lose an equivalent amount to the rest of the Universe. What is different is the incoming light is at a high frequency (fewer photons) than the outgoing infrared ( more photons). The incoming light has a lower entropy than the outgoing . By increasing the entropy of the Universe we can reduce it locally and build complex creatures.

Of course it already exists with symbiosis being common including the bacteria in our guts. Extinction is a consequence of evolution with the great oxygenation being a prime example. I think the difficulty is how evolution could select against predation especially in primitive organisms. Regards Andrew

Makes sense could then just be a hot/warm pixel. Regards Andrew

I would do the research you propose and then ask on the ASI forum. It may be a known issue. If it occurs randomly but it regular patterns as you say I doubt new flats will fix it. Regards Andrew PS on my tablet I don't see a signature.

It would help to know what camera, processing etc. Regards Andrew

Unfortunately, predation is the most efficient way to obtain the high quality entropy complex organisms need. It is, in my opinion, almost certain to evolve if there is any limitation on resources leading to Darwinian competition. Regards Andrew

I thought you just read the Takahashi catalogue? Regards Andrew

It might be worth reviewing the basics noise regimes. At zero to low signals read noise (including random telegraph noise, quantisation noise etc. ) dominates and is independent of the signal. This is followed by signal shot noise and is proportional to the square root of the signal. Then photon response non uniformity (PRNU) dominates as it is proportional to the signal level. Finally, saturation. Various strategies can be used to reduce the effects in the various regimes. Personally, irrespective of this I set my cameras for the best signal to noise ratio they can deliver usually just as the high gain mode cuts in and then change tbe exposure accordingly. I also create and use a high s/n ratio master PRNU flat. Regards Andrew

Excellent work Robin Regards Andrew

@JeremyS should be able to point you in the right direction. Regards Andrew

This is the proposal from ASI "Usually we recommend slowly cooling the camera to solve the problem, which like the way you tried. Before letting it cool down to target cooling temp, please keep it at 5℃ for 5 minutes, then cool it down to target temp and if this continues to appear, it will basically disappear in 5-6 minutes." It seems to work for me. Regards Andrew

Yes it's mono. Regards Andrew

In looking at the speckle problem I had I tried ASIStudio and it seems to have unlocked the bin 1 mode. I have no idea how to set it back to the original mode other than use 2x2 bnning but I an not sure that the same thing. Help needed. Regards Andrew

It took far to long for you to come to your senses. 😊 Enjoy. Regards Andrew

I took a series of images from ambient to -5 c all was well until -5 when the speckle pattern appeared. Ha ha thought I. Returned to 0 c no speckles. Reduced it in 2 degree increments to -10 c no speckles! Then to -15 c no speckles. Will try drying the desiccant just in case. Regards Andrew

Inside on a test rig definitely not condensation as it's as dry as a bone here! Regards Andrew PS I will look at the sensor to check if and when it happens again as water could be trapped in the camera..

Here is when its ok

I have been getting a speckle issue with the camera I have been testing . I get a hot pixel surrounded by some cooler ones, see attached. Anyone come across this before? Latest software etc. Any reports at @FLO? Thanks Andrew PS this is intermittent sometime its fine but I can't find any way to consistently cause or cure it.