Survey of Attitudes Towards Astronomy
This instrument includes a pre-test and post-test on students attitudes towards astronomy. Four factors, including affect, cognitive competence, perceived value, and perceived difficulty of astronomy are assessed.
Average Review:
(4.0)
by anonymous,
Postdoctoral Fellow, Weizmann Institute of Science, (Israel)

Most importantly, I think there is minimal apparent relevance to informal STEM, due to the references to "class", "homework", "course", and "tests" in several of the items (4 items out of 22 specific to astronomy). The phrasing suggests the instrument was intended to be used as a post-test following an astronomy course.
The directions could be condensed significantly by putting the range of response meanings (agree/disagree) above the column of numbers.
Items 1-22 are specific to astronomy, while items 23-34 are about attitudes towards science in general. Are the general science items included in any of the four factors/ domains ("affect, cognitive competence, perceived value, and perceived difficult of astronomy"). [Note typo in this last sentence with the word "difficulty"]
Only a post-test was downloaded - yet the description states that the instrument includes a pre-test and a post-test. The items do not seem appropriately phrased for a pre-test. Is there a different pre-test instrument?
The instrument is likely easy to administer, and should not take longer than 20 minutes (this time should be included on the description page). There is no indicated age-level for which the instrument is intended, so the time of administering could vary significantly.
The reliability and validity are not provided in the description of the instrument, so it's impossible to assess the psychometric properties without seeing this data.