How Can One Tell What Telescope Made an Image of a Deep Space Object?

Question: When looking at an image of a deep space object,  how can you tell what type of telescope was used to take the photo?  — Jeni

Answer: Unless the caption or other description of the image lists the telescope used to make the image, it is often hard to tell which telescope was used to make an image of an astronomical object.  Fortunately, at least in my experience, the origin of an astronomical image is almost always listed with the information associated with the image.

Jeff Mangum