QHY268M & QHY268C Users Thread (Please share your knowledge and tips)

[tomato]

I was getting warnings in APP that the offset was too low when set at 30, I raised it incrementally until they disappeared. What’s the problem with an offset of 255 apart from losing a little bit of dynamic range?

[Stuart1971]

5 minutes ago, tomato said:

I was getting warnings in APP that the offset was too low when set at 30, I raised it incrementally until they disappeared. What’s the problem with an offset of 255 apart from losing a little bit of dynamic range?

Well nothing I guess, but that is an issue with APP, I thought it had been sorted a long time ago….

[tomato]

Ah, OK, maybe I’m behind on my APP updates, which wouldn’t be the first time.

[Starflyer]

Thanks for the answers!

I found this excel sheet, it's called 268TradeoffEstimator_b.xls, it shows a lot of stuff that's over my head but looks useful.

I think I'll try Mode 1, gain 0, with 300s subs for L and 420s subs for RGB, does that make sense?  Of course if I see a large amount of blown out stars or galaxy core I'll have a play until I get a better result.

I get a decent FW figure from Mode 1 / gain 0 and a similar DR to Mode 0 / gain 26

Does anything stand out as glaringly wrong with my assumptions?

 

Cheers, Ian

[Rob_Jn]

Just wondering if anyone else sees these specs in their cooler fins, is it dirt or surface mount components ☺️ if it’s dirt should I carefully clean out? Could be something from a nearby conifer. Never noticed them before.

 

Edited May 20 by Rob_Jn

[Stuart1971]

Never noticed anything in mine. I would just blow them out…should be fine…👍🏻

[Rob_Jn]

I’ll give it a go and see what comes out …..