ASI185MC vs ASI174MC

ratchet

I have searched high and low for ASI185MC images but there are only a few. I am finding many ASI174MC images. I was hoping to find some comparison images, such as single frames of similar objects, or a screen capture of a guiding screen, or anything that would give an idea of noise and dark current.

I am looking for a "does it all" HD camera, and I have read all about these two.

ASI185MC

Pros: more sensitive, lower noise, less expensive, small pixel pitch better for planetary

Cons: smaller sensor size, rolling shutter, smaller well

Question: What are the framerates? Does this camera have FPN?

ASI174MC

Pros: larger sensor, global shutter, larger well, pixel size and dynamic range better for DSO(?), no FPN

Cons: less sensitive, more noise, more expensive

The size difference between these two isn't much of an issue for me.

I currently own a Lodestar (mono) for guiding (50mm guide scope), a Chameleon for Lunar/Solar, and a Firefly MV + Lifecam for planetary. I do DSLR DSO astrophotography, so I need something that will guide well. The Lodestar was a gamechanger for me in this regard (no more hunting for stars). Will either of these cameras be as capable a guider as the Lodestar?

I would also like a camera that can do solar system imaging of lunar/solar/planetary. The reason I want color is for occasional streaming capabilities during public events. I know the ASI224 is the best color sensor, but the size is a bit small for general use. Live DSO viewing would be a bonus (EAA). I need "one camera to rule them all"! I know there will be compromises.

I am willing to sell the Lodestar, Chameleon, and Firefly MV to fund a purchase if I can find a good all around HD resolution video camera. If I have to have monochrome to guide well, I can deal with it and find money for two cameras, but I'll probably have to sell off a Nagler : .

My scopes are 50mm guide scope, WO 80mm F6.8 ZS II ED, Meade 8 F10 SCT, and a few dobs.

Thanks for taking the time to read all this,

ratchet

riklaunim

ratchet wrote:
small pixel pitch better for planetary

Pixel size is irrelevant in most cases as you can set optimal f/ratio with a Barlow. Small advantage would be a pixel size that wouldn't require a Barlow for given telescope.

In general color IMX174 isn't very good when compared to those three new color IMX sensor. IMX174 is only for mono.

ratchet

Thanks for the reply. I have followed your site for a few years (if this is who I think it is). A wealth of information. You are correct, I can always barlow more (or less) if needed.

I'm leaning towards the ASI185MC at this point. It seems to cover all my wants with the least amount of compromise. Maybe I will hold off and get one with an integrated cooler when they are released. I just wish I could see more sample images from the 185.

ratchet