Hi Jeg,

i have a HVP-15HF probe which works very well for me, its x1000.
You can find them on Ebay, like here:
http://www.ebay.com/itm/New-High-Voltage-low-noise-probe-for-scope-DMM-50Mhz-15KV-1000-1-Tektronix-OEM-/221528106688?hash=item33941aa6c0


I also have a Tektronix P5100 x100 (2500V) probe which works also very good with the lower voltages (2500V max.) also from Ebay:
http://www.ebay.com/itm/Tektronix-TEK-P5100-Probe-High-Voltage-250-MHz-100X-/131567627688?hash=item1ea20aada8


Regards Itsu

Thank you guys. I will go for the P4100 probes. I found it 21 euro with free international shipping!!! For higher voltages perhaps I ll make an attenuator

 http://www.ebay.com/itm/100X-P4100-High-Voltage-2KV-2000V-Oscilloscope-Scope-Passive-Clip-Probe-100MHz-/251678142479?hash=item3a992fb00f

I was about to buy a used Tektronix tds220 scope for 380 euros with its communication card. Hopefully last minute I decided to take the new Rigol.
I hope everything will go well and scope will arrive in one piece from Us to Europe.

Thanks for the advice Tinsel! I really don't want to make again the same mistake that I did before some months, when I both destroyed my analog oscilloscope and my frequency generator together! One shot! In just a moment I put myself out of experimentation for a long time. Anyway. We learn from our mistakes. Some times cost a lot but eventually we learn something! I hope..

Jeg, congratulations on your new instrument! The RP2200 probes that come with the Rigol DS1054Z are rated to 300 VAC in the 10x setting and 150 VAC in the 1x setting. (Category II). The scope inputs themselves are rated 300 VRMS (Cat I).

I can't say anything about the home-made HV probe. If you do decide to build one yourself, I can only say... Be Careful!  I also don't know about the capacitance question. Better safe than sorry... use a probe that's designed for the purpose.

Thank you Tinsel, Chet

I got it Tinsel, it is a risk! Ok, I will try to locate a hv probe. The problem is that my country is under capital controls and is not allowed to order anything from eBay or any other international company. Thanks God I found this Rigol here, and very close to the original $399 price.

That's why it is so hard to repair good probes, they use that wire, which solder doesn't stick to.

I haven't been able to find a source for that wire myself. But it's not really needed for low-bandwidth probes; you can make your own simple probes using regular 50 or 75 ohm coax.

For example,
http://cromwell-intl.com/radio/probes.html

Tinsel I managed to order two p4100 probes from eBay through a friend of mine who lives abroad. But still want to mess with HV with better response than P4100 at frequencies up to 50MHz which is the limit of my rigol. (I still don't believe that I have a scope like this on my bench). I will also fix my old analog one and any signal before going in to the new DSO, it has to pass first from the old analog.  What I learned from this, is that analog scopes can be fixed easy because they have an input channel board which takes all the HV.
If hv pass in to the DSO then start crying before even see what happened 

The 50 MHz bandwidth of the DS1054Z doesn't mean that that is the "limit" of the scope. Oscilloscope bandwidth is usually defined as the 3db rolloff point of amplitude of a sine wave signal. That is, as the signal gets higher and higher in frequency, the scope will show it at lower and lower amplitude, and when the amplitude of the displayed signal is 3dB less than the true value of the signal, that is considered the "bandwidth" of the scope. The scope will still work at higher frequencies though; it's just that the display of the higher frequency signal components is attenuated more or less.

The good news is that the Rigol is conservatively rated; the 3dB rolloff point is more like 60 MHz for sinewaves. The even better news is that the scope can be "unlocked" to give 100 MHz bandwidth, which is also conservative; some people who have tested the "unlocked" scope have found that the 3dB rolloff point is over 100 MHz.
 
Once you've got your scope "burned in" and are past the vendor's guarantee (30 days here in the USA from TEquipment), and you know you aren't going to have to return it under the Rigol factory warranty, you can easily unlock your scope to add the 100MHz bandwidth and the advanced trigger features.

Yes, I agree about using the Analog scope on the HV measurements first... they are usually repairable if something goes wrong. I wouldn't even know where to start repairing the Rigol's front end if it failed from overvoltage on the input, though.