robindurant

On 06/01/2020 at 09:59, carastro said:

I presume you are not in a position to get an Equatorial mount.  I am afraid you are going to be stuck with these problems all the time you have an Alt/Az mount making your imaging life far more difficult than it need be.  

Carole 

No Im in a situation where I can only veiw from SE - SW  but have produced reasonable images, this is new

15 hours ago, steppenwolf said:

You *could* do this manually but it must be done in between exposures. Set the handset slew speed to minimum and just ‘brush’ the control pad direction keys in a random pattern.

What you are aiming for is a random position of the object that you are imaging with a minimal offset between each image.

Many thanks Steve, I will try that

14 hours ago, ollypenrice said:

In this image I think you've black clipped it so much that none of the rotating noise of the first one would be visible anyway. Some field rotation remains visible in the stars, though. The only defence against field rotation with an alt-az mount is to shoot short subs. (Actually no, you do have the option of relocating to either the north or south pole... 😁) 

If you're feeling diligent and have Photoshop there is a simple software dodge for making stars round. Saved as an action it can work quickly but only on one star at once. Your action, saved to a function key, should record the following once the magic wand has been used to select a star:

-Select, modify, expand (try 5),

-Select, modify, feather (try 3). The chosen values depend on camera-scope specifics.

-Filter, blur, radial blur set to best quality and spin. Run the filter twice.

-Deselect. (Don't forget to record this.)

Once done you magic wand a star and hit the function key. Voila, round star.

Olly

 

Thanks Olly

9 hours ago, tooth_dr said:

I wonder if you dithered your exposures would this help reduce the circular noise. It looks like the walking noise you see with EQ mounts, but circular. 

Can you dither manually without software, say with your hanhset while exposing , if so how, thanks

Thanks chaps for your help. The Horsehead target was only 45 degrees and I have just processed some images taken last night using iso 1600 and 90 seconds again at the Horsehead and the images have the same rotation problem. I have tuned this mount and it does now produce good images at 90 seconds iso 1600 at even higher altitude than 45 degrees, the attached image is at those settings

Thanks for replying. I know that AltAz mounts are prone to this rotation, however the stars are not elongated and using DeepSkyStacker this should handle this small amount of rotation that these 6 frames developed or maybe not

Can anyonetell me what is causing this circuling, Im using a WO Z71 on a iOpton AZ Goto mount 3mins @iso 3200 , high I know but for testing. I have a Flattener fitted which is variable but have set it at 71. I have attached 2 images stretched to show the problem. the object was at appox 45 degrees altitude, low Moon well away from the Horsehead, the first image was with a Ha filter and the other without any. I know a alt az mount is not ideal for imaging but I have had reasonable results before

On 23/05/2019 at 15:42, Woking said:

Is it a newly purchased AZMP?

Mine has grinding noise and squeaks when slewing in just one direction.

Could only find operating manuals on ioptron website and opening it up will likely void the 2 year warranty.

I've contacted the retailer, have you tried this or Ioptron support?

 

I've emailed Altair Astro but still waiting for an answer and now have contacted iOptron support and again waiting, meanwhile my warranty expiration gets nearer !!

Can anyone tell me where I can download a "Strip down"  or repair manual or instructions for this Mount, I have a knocking noise on slewing and need to inspect it

How long an exposure can you obtain with that  without serious star trails 

On 28/09/2018 at 11:37, Davey-T said:

Hi and welcome to SGL

Here's mine same setup, all you need to do is reverse the foot and it balances fine.

Dave

Hi how long an exposure can you obtain with that rig

On 06/12/2017 at 15:35, PhotoGav said:

I had similar problems powering my Star Adventurer with a mobile phone charger power bank. It kept on switching off, very irritating! I now use a Skywatcher 7Ah PowerTank with a USB lead to the Star Adventurer. It works perfectly. Not as small and convenient as the power bank, but it works!

Is this not 12v?

I have Tracer 12volt Power Pack which I used successfully on an iOpton Star Tracker, can I use it on a Star Adventurer or must I use 6v. I hate internal AA Batteries, prefer remote but like others the ones I’ve used keep cutting out

Richie

God know, it could be. At the time to me it was deep space he he

Robin

My first with a Phillips cam

Robin

The one I have hinge in the middle like a pair of Bins to centre the two tubes to your eyes so that the image merges into one. I found them great for Planets and the Moon jumps out at you. Hope you get them right. I also found that the highest mag eps I could use were 2x 30mm but with a lens less barlow it gives you great magnification.