Where I live, the northeast of Spain, we enjoy many days of clear skies per year. Each clear night I dedicate 2-3 hours to photograph the sky with the EAA system or whatever you want to call it. Over the years I have collected more than 2,000 photographs of all objects of magnitude less than or equal to 12, it is a complete collection that I am updating every year to check the learning curve.
In short, to start with the EAA easily the most important thing for me are the cameras we use. The scopes help to have more or less detail but combining them with two basic cameras one with the IMX224 chip and another with the IMX294 can cover all the objects that I mentioned before in detail and in FOV and that according to Skysafari are these:
As basic telescopes I would recommend a newton 8 "f / 4 for galaxies, globular clusters and planetary nebulae and an 80mm FPL75 refractor or a Ritchey-Chretien f / 9 for bright clusters and nebulae.
The EAA could expand much faster than it is doing because in most of the forums it falls quickly into technicalities that frighten the beginners. For example, in my country, Spain there is no forum that picks up the EAA fans and I know there are some, but most forums are dominated by astrophotographers and see EAA practitioners as children and demoralize them with terribly technical advice.
The EAA is very simple, basic astrophotography and the more we are able to explain it, the more followers it will have
That is a wealth of experience Carlos and I learn a lot from your posts. I am probably complicating your summary by asking you on what scopes do you use your IMX178 and your IMX287 and for what objects? Also, do you have a permanent setup in a shed or observatory or do you setup each observation night? cheers Paul
IMO, The IMX178 its a clean sensor but with a low sensibility also. For VA/EAA I only use with a refractor apo 72mm f/6 for open clusters and single stars but now I have replaced it with the IMX294 which is much more sensitive and captures very weak stars with exposures of 10-12". With the IMX178, I needed exposures of more than 20" and did not capture the weak stars very well. The main problem with this sensor for VA / EAA is its low sensitivity.
The IMX287 I use it for nebulae with a Halpha filter and the refractor achro 72mm/f/6 with exposures of 30-40" which is already at the limit of the EAA, it is very sensitive and can capture really weak details.The problem is that it has a very low resolution and for galaxies and globular clusters or planetary nebulae has little detail, for this I use the IMX224 but without filters.
As you can see they are very specific sensors and I would not recommend them to begin with. Currently the IMX224 and the IMX294 are the best for VA / EAA, IMO
I have a permanent homemade observatory. It is a 2x1m plastic garden shed. and a cement pier at 1 m. away with a harnessed NEQ5 on top. I saw it in an American forum and I copied it. It's going very well and it's very cheap !. The telescope is connected wireless with Skyfi and the camera with a 2m USB 3.0 cable. I use two cheap computers to control telescope and camera. Never used reductors.
I've (tried to) watch Don who broadcasts heaps on NSN. Recently he latest favorite camera sensor is the 294. It is interesting to hear your comment on it being nice and sensitive elpajare. Thanks for that. Because while I say watch Don using the 294, his EAA method is many long exposures as he loves AP quality stuff - see his flickr 294 album in the link below. The photo names say the exp time and total stack length/duration. Its like watching paint dry its so slow before the final stacked image. But beautiful quality.
So, I'm interested and glad to find out that the 294 is a camera which not only has good sensitivity for going short exposures, but also good fine quality if you wish to progress into AP like quality. Sounds like a sweet sensor.
What Don does is very good but I do not have that much patience and I only use UHC filters for weak bright nebulae if there is no other choice. I prefer short expositions and that's why I like the 294 and the 224 combined with short focal telescopes.
The 294 is a very sensitive chip without ampglow and gives a large FOV, well combined covers the rest of celestial objects that were out of the possibilities of 224. You will not regret having it (Risingcam is a cheap option and has given me good results)
With these two chips you can photograph / observe all celestial objects including weak bright nebulae that resisted with other chips.
But as Don demonstrates it can also give good results for Astrophoto
TSOptics Ritchey-Chretien 203/1624 for small and weak objects
Tsoptics refractor AP 72/432 (fpl53) for big bright nebulae and other big objects