Regarding your larger project, I've managed to see all the Palomars in my 18", so I imagine they shouldn't be tough for you with a 20" and access to dark skies in Canada. Most of the following observations were made with from Bortle 2 or Bortle 1 (where marked as "TSP" for Texas Star Party) skies from Texas. All of them were made with my 18", most of them with a very bad coating on the mirror, so your results might actually be better.
Palomar 1 (Jan 2015): Somewhat elaborate star-hop. Seen with averted vision in a 10mm Delos (2.2mm EP, 207x). Rocking the focus enhanced the view. Observation confirmed by cross-checking precise observed position against DSS image. View best in 10mm Delos followed by 14mm Pentax (3.1mm EP, 148x). At the edge of visibility, but confirmed repeatedly. Easier than Fornax Hodge GC 1 [which I had observed earlier that night], though factor in the altitude difference.
Palomar 2 (Nov 2013): Surprisingly easy. Brought the asterism to the north east of the object into view, scanned the field with averted vision, and it was right there. Best view was in 10mm Delos. Only very inconspicuous hints of resolution. Much harder in a 7mm Nagler (1.5mm EP, 295x). After having seen it in the 10mm eyepiece, I was also able to see it in a 31mm Nagler (6.8mm EP, 67x).
Palomar 3 (Jan 2015): Very indistinct glow to one side of a star. Sensed it repeatedly at 20mm (4.4mm EP, 103x), 14mm. Asymmetric to one side of the star. Very very faint, more difficult than Holmberg I [which I had observed previously]. I consistently see the brightness more to the south than the DSS image indicates.
Palomar 4 (Apr 2012, TSP): Very faint. Could hold ~25% of the time with averted vision.
[Palomar 5 already posted above]
Palomar 6 (Apr 2012, TSP): Beautiful! Rather easy. Was viewed @ 31mm Nagler + 2x Barlow. Huge!
Palomar 7 = IC 1276 (Mar 2014): Easy for a Palomar, tough for an IC object!
Palomar 8 (Aug 2013): Very easy Palomar. Visible as an unresolvable patch in 31mm Nagler. Another asterism / open cluster lies South, but that is more resolved although fainter. Initially thought it to be a nebula. Somewhat better resolved in the 10mm Delos. Resists complete resolution even in 7mm Nagler. Better in 4.5mm Delos (1mm EP, 459x) under improved seeing.
Palomar 9 = NGC 6717 (Aug 2013): Very close to orangish-yellow star. Easy, bright but small. 31mm Nagler. (I have also seen this in an 8" telescope for what it's worth, but can't find the log). This is perhaps the easiest amongst Palomar globulars.
Palomar 10 (Apr 2012, TSP): "Very faint, circular glow"
Palomar 11 (Aug 2013): Easy star-hop from Kappa Aquilae. Rather faint, but "resolved" even in 31mm Nagler. After precise star-hopping, it was easily located in the field and confirmed against neighboring stars. 10mm Delos insinuates that the feeling of resolution might only be because of foreground stars. Somewhat large, faint glow with a few bright stars (presumably foreground stars) on it. DSS image seems to indicate otherwise, that the feeling of resolution is actually real and there are no real foreground stars. This is confirmed again by averted vision.
Palomar 12 (Aug 2013): Star-hopped from M 30 in 31mm Nagler. Was just about detectable in the 31mm Nagler. Triangular asterism conveniently "points" to the globular. 10mm Delos shows the cluster nicely, and notes that the cluster is a tad west of where the "arrow" points, which was later confirmed against DSS image. The "chain" of more prominent stars was noted in the eyepiece and checked against DSS. More sensation of resolution at 7mm, but the fainter stars are rendered invisible.
Palomar 13 (Oct 2013): Barely detected. Had to know exactly where to look. Held the core brightening for multiple instants in a 10mm Delos. Could not hold continuously. This is a confirmed observation, but must ideally repeat as I had to stare very hard and look for it in the exact location to see it. Tried multiple eyepieces: 10mm Delos worked best, followed by 13mm Baader Hyperion (2.9mm EP, 159x).
Palomar 14 (Jul 2014): "On a night of poor transparency, the stars in the field sported halos; however, there was a fainter star which had a more concentrated halo, comparable to the brighter stars in the field or perhaps even larger. This is the glow of Palomar 14, as confirmed later." Earlier (May 2014, TSP) from the darker skies of Texas Star Party: "20mm Pentax was useful to detect the object by condensing the core. 10mm Delos was thereafter useful. Not terribly difficult. Looks like a halo around a faint star."
Palomar 15 (May 2014, TSP): I spent ~1 hour observing this object in my 18" Obsession, a friend's 12" dob and my 6" dob. The object was visible only in the 18". A slight brightening of the background was observed near a faint star pattern. The exact position was then confirmed against POSSII image. The object was repeatedly detected in the 18", made easier by tapping the scope, in the 20mm Pentax XW eyepiece.
Edited by Akarsh Simha, 04 June 2022 - 05:47 PM.